You’ve got it backwards - developers don’t want to pay for traditional architecture because it costs more money due to requiring skilled craftsmen. I love when I get to play with brick and stonework and actually detail things out, but clients never want to pay for that stuff unless the jurisdiction requires it. McMansions are typically off the shelf plans put together by a design/build firm for a developer that wants to build cheap and easy and then sell at a massive markup. Commercial buildings are neutral EIFS boxes because they go up and can be ready for a tenant to move in in 16 weeks, and if the tenant doesn’t renew their lease it’s easier to sell a new tenant on a building that isn’t designed with the previous tenant’s branding in mind (like how the roof shape is a dead giveaway that the medical office used to be a Pizza Hut)
If we want buildings to look nice again, we as a society need to mandate that they look nice. Developers only want what they can build and turn over quickly.