Of course it will change. Cloud gaming is here now, but in limited forum. Internet will get better. Just in the last 5 years it's much better then it has ever been. I'm not saying it's going to be amazing for cloud gaming everywhere, but some countries will have the infrastructure for it already. It's amazing how far we have come just in the last 25 years. Before that we didn't even have internet. So yes it will happen.
If you want, for example, low latency esports-type stuff or high VR performance with foveated rendering, there are a number of problems:
1) The speed of light
2) The light bounces as it travels through the fibre cable. This adds a lot of distance - to solve this we'd need to a) invent something vastly thinner yet stronger and b) replace all cabling in the world with it.
3) Light moves more slowly through the material than in a vacuum.
4) Every router and cable connection adds further latency as we move between material contacts.
If you're the kind of person who buys a gaming monitor for 1ms response and that sort of stuff - not to mention demands of forthcoming VR, then we're already in trouble before we even move into other problems.
Cloud gaming may well replace the low end pc gaming market and low end gaming laptop segments - at 30fps, the increased response doesn't matter as much. But to think of the "internet" as an ever exponentially increasing performance commodity is as wrong as assuming that cpus will endlessly node shrink to go faster. They won't, Physics exists.