Personally i am huge fan of owning my own data so i only have experience with self hosting from a home server.

You can probably find places pretty easily if you look for “cloud computing”, “cloud gpu”

I am pretty sure you don’t need licenses to start. Renting a last gen gpu may be expensive though (pay by the hour) this way of decentralized compute is becoming more and more common for developers.

I recommend waiting a few more years and keeping an eye on how services like nvidia cloud gaming evolve and how mainstream working with virtual machines becomes for the average office worker.