Seconded: and we need to have worthy competitors spring up without those bad practices and lousy cookie banners, and people to flock to them.
Once that happens, the "originals" will feel the pressure.
Once that happens, the "originals" will feel the pressure.
But even so, I'd argue that since it's a small business, you'd do much better with qualitative data rather than quantitative, since it's a small business it's hard to make choices based on small amount of data. Instead, conduct user experience studies with real people, and you'll get a ton of valuable data.
All without cookie banners :)