Sounds like the typical case of people not looking at the core work required in order for the very expensive individual items like tailored nutrition, top-end (and even customized) parts, per-race-specific optimized chains and what not to make any sense whatsoever.

If your times are, say, 20% or more above the absolute top times for a given course, you've got a long way to go by improving yourself - on just about any bike whatsoever. The super expensive parts make low single digit differences.