Wrestling with a code generator also creates a sunk cost fallacy where progress grinds to a halt but you still try and use the tools to fix the problems the tools created. Or you go in and fix things yourself, in a codebase you don't truly understand. A single developer can recreate the contextual nightmare miasma of a large corporation all by themselves.

There's also an emerging market consideration: MVP are easy to build so time to market is no longer hard to achieve. It's not a differentiator.

X was built in 3 days but is slow and riddled with bugs and security errors. There are also A, B, C, D and E which are effectively the same thing built just as fast.

Z was built over six months and is rock solid and performant.

Who wins the market share?