Renting a GPU in the cloud is throwing money away. Buying one outright is impossible. Financing one over thirty years at a fixed rate is the responsible middle ground.
With a Fannie VRAM mortgage you take your card home today, and you keep it for as long as you keep up with the payments. Miss three in a row and a man named Clive comes to your house to "reclaim the collateral". Clive is gentle. Clive has done this before. Clive is patient. Very, very patient.