Yes, it’s harder to do this, especially when you’re starting out; if I saw such an ad like in the post in my area, I would definitely prefer that over a big corporation even for the same price. The fact that this is significantly cheaper makes it even sweeter, and I would have definitely used this guy’s services had I lived in Seattle.
Probably “We can ride the AI hype train and make loads of money, sell the start-up to a big tech company and retire”.