Ask HN: Is the consent management platform industry on a dead end?

Recently, I learned about this CMP industry. I didn't know behind all these cookie banners there were many companies making profit.

Still, it's not clear to me where does this profit come from.

With many browsers already forbidding third-party cookies, many people using only essential cookies, many others removing cookies with extensions such as Cookie Autodelete... where do these companies get profit from?

I'm genuinely curiuous as I was offered a position in one of these companies, but to me... it looks like it's a business which is rapidily dying.