I'm not so certain he is. We must be at an adult film company saturation point by now. There is so much porn. He's going to have to go super niche or something.
For a few videos, but I think the pool of people who want to see Kanye West in multiple porn videos is vanishingly small.
Also, I'm not sure he's going to star in them. Who knows. It's Kanye. He could be expecting Porky Pig to star in them and throwing a fit when he's told Porky Pig is a cartoon.
Onlyfans is pretty new and they probably make good money. And even if he just resells others content without any trace of innovation just his name alone would get him some customers.