It'll make a mint 'cos all people want is knock offs of well known styles
You don't need a farm of AWS EC2s and a 5TB backend DB of data to rip stuff off, just give someone a decent DSLR and a copy of Photoshop, then give them 18 months. You only have to look through any modern photo gallery like 500px.com to see how many people will happily "rip off" the most common photo styles, saturated and overprocessed images of landscapes. Soft focused nudes that wouldn't look out of place in Amateur Photographer circa 1985!
You want your AI to impress me? Show me something truly original that ticks all the right mental boxes for a pukka image, based on the backend data you have on famous artists and their work.