I have worked for 5 companies in my 15 years career. One of that company was ecommerce consulting firm which dealt with a lot of mom-n-pop ecommerce stores. Let me tell you not a single one of them was willing to give up any dark patterns if that meant losing revenues. Unless you are working on non-revenue generating product like internal dashboard, it is all about get sales anyway possible.

I am sure there are ethical companies, I see many of them mentioned here, started by readers of this forum, but what percentage are those. Imo, they are less than 1%.