why does almost all b2b software look like a spreadsheet from 2012?

i am genuinely curious why we accept terrible ui in b2b tools. i got fed up with sending clunky pdf proposals and waiting for wire transfers, so i built a live checkout tool for my agency. i spent an unreasonable amount of time using react and remotion to get the spring physics and dynamic morphing right, just so it feels like a native apple widget.

do clients actually care about smooth animations in a b2b checkout flow, or am i just over-engineering? in my experience, a premium feel makes them trust the platform and pay faster, but i want to hear from other founders. what is your take on b2b aesthetics?