Yes, but the people with the RAM nowadays are the data centers, not the end users.

It doesn't make the economics any different. In a browser environment, you're maybe looking at the acceptable lease being 100MB for 1 second. Much more than that, and you start hitting limits of what browsers will let you do on low-end phones. Longer than that, and we're back to the user-observable latencies being too long.

100MB for 1 second just is not much of a deterrent.