You're not bullish enough on this industry and the capacity required to meet global demand.
HyperCORE is doing a ~10k right now with ~10% CEX volume numbers and no tradfi assets.
MegaETH is targeting 100k TPS because that (and more) will be needed, and that number was only chosen by @yilongl_megaeth because dependent systems had that as a limiter.
It's arbitrary and the goal is unbound. IBRL mindset.