None of us knows. That's why today's topic is "science fiction," rather than "practical statistics."
However, it's easy to posit, in theory or fiction, an economic system in which the productive continuously provide a supply of valuable goods and services to the unproductive. As the ongoing welfare-state wipeout reminds us, all attempts at producing that outcome have failed. I do not find the idea that the average person will have access to high-end cyber-pleasures very probable, in a time frame that covers my lifetime, at least.
Of course, I could be wrong. Any of us, or every one of us, could be wrong in what we predict.
I think that kind of tech is still 50 years out at minimum...at least the total VR kind. Probably 75 or more. That is serious computer horsepower afterall.
As for the funding it sans workers to provide, say the govt today said “Nuke for all!” and did a Manhattan project to build 1000 plants. They have both the ability and authority to do it. We have the tech to build them ALL in 10 years.
So now we simply sell that power to the world. Why not? we don’t need it. Pour that money into building the matrix and it’s support infrastructure. By the time tech catches up, it’s ready to go and ‘paid for’...as are support costs through ongoing power sales.
Most foreign countries would buy the power to avoid building plants on their soil...like we do here with oil today. Point being, funding and feeding people in this fantasy is easy. The only hard part is the Govt OK to do it.