It's just not comparable though is it? You need cloud services because it's physically impossible to use your single home computer as a server, CDN, load balancer, mass storage, security service, and distributed system.

But AI is just weights, you can run a reasonably intelligent model at home, or on a few GPUs if you're a small-medium sized company, and it doesn't require dedicated maintenance.

If you're a medium-large company, you should definitely run your own AI because you can max out the CPUs more often. You're not only able to run privately and locally, but you're also able to run efficiently.