Infrastructure decisions carry expiration dates that don't appear in the initial business case. The GPU clusters enterprises deployed 18 months ago face 12- to 18-month replacement cycles as newer architectures deliver better performance per dollar. The hardware still functions, but enterprises running 1,000-plus GPU clusters often sit below 30% utilization. Capacity isn't the problem. Workflows evolved and the infrastructure can't keep up. Unlike data center real estate that holds value for decades, AI infrastructure depreciates fast enough to create perpetual refresh cycles with e-waste and labor challenges implying continuous replacement.

Web automation infrastructure depreciates in ways that aren't obvious until you operate at scale. The authentication patterns that work today break when sites update their security models. Error handling tuned for one set of failure modes becomes inadequate as sites deploy new bot defenses. The infrastructure still runs, but its reliability degrades—from 99.9% to 95%, a difference that compounds across millions of sessions. A stable system six months ago now requires constant maintenance just to stay current.

The depreciation doesn't always show up in accounting systems, but it appears in operational reality. Cloud ERP implementations recover costs in 16 months versus 2-3 years for on-premise systems. That faster payback isn't just about cloud efficiency. It reflects recognition that infrastructure value erodes quickly in fast-moving markets. Organizations optimize for rapid cost recovery because they understand infrastructure investments have half-lives measured in months, not years.

When Accounting Schedules Miss Reality

Traditional infrastructure accounting treats assets as depreciating linearly over 3-5 year schedules. Market evolution doesn't follow accounting conventions. Your carefully architected systems can't handle new authentication requirements. They can't scale to new geographic regions. They can't support the workload patterns that emerged after deployment.

The infrastructure still functions. It just can't create the value it once did.

For web automation infrastructure operating across thousands of sites, this depreciation manifests as brittleness. Sites evolve their defenses. Layouts change. Authentication flows update. The browser automation that worked reliably requires increasing maintenance to stay current. The infrastructure doesn't break completely—it degrades. Maintenance costs rise until the economics of maintaining old infrastructure exceed the cost of rebuilding.

Private equity firms replacing variable cloud costs with fixed infrastructure make this calculation explicitly. They're betting that infrastructure markets have matured enough that fixed-cost investments won't depreciate faster than they create operating leverage. The timing matters as much as the decision itself.

Evaluating Infrastructure Through Depreciation

Infrastructure depreciation creates a choice: maintain aging systems or invest in refreshes. Hyperscalers project $390 billion in capex by 2027, with much of that spending replacing infrastructure that still functions but no longer delivers competitive performance. The refresh cycle becomes permanent, not a one-time upgrade.

Organizations navigating this reality need to think through velocity first: how quickly do your infrastructure needs evolve relative to how quickly infrastructure capabilities improve? In fast-moving markets, infrastructure depreciates quickly because better alternatives emerge constantly. In stable markets, infrastructure holds value longer because the performance bar moves slowly.

Then there's tolerance: how much degradation can you accept before infrastructure becomes a competitive liability? For web automation at scale, the answer often lies in reliability metrics. When authentication success rates drop from 99.9% to 95%, you're not just losing 4.9 percentage points. You're multiplying that loss across millions of sessions.

Refresh economics matter too: how do you time investments to maximize value from existing infrastructure while avoiding obsolescence? External infrastructure providers absorb depreciation risk by continuously updating their platforms. Internal infrastructure requires ongoing investment to prevent value erosion. Which depreciation curve aligns with your ability to maintain and evolve infrastructure over time?

Infrastructure investments don't just have costs and benefits. They have half-lives that determine how long value persists before depreciation erodes returns. Understanding those half-lives changes how you structure investments and how you think about the true cost of infrastructure choices over time.