The same predictions was probably made, but with nuclear instead of renewables back in the 60s-70s . And frankly it seems like the world could have actually been run almost exclusively by nuclear today if we had realized how bad fossils where instead of being scared of nuclear.
Predictions:
1) in 2050 NIMBY will be just as bad for renewables as it used to be for nuclear.
2) New standardized nuclear pp designs will bring the cost of nuclear down to be much cheaper than almost all renewables, but in localized areas where it actually makes sense renewables will dominate
3) Message boards will still be full of people claiming we should run exclusively on solar even in places like Norway and Canada
Predictions:
1) in 2050 NIMBY will be just as bad for renewables as it used to be for nuclear.
2) New standardized nuclear pp designs will bring the cost of nuclear down to be much cheaper than almost all renewables, but in localized areas where it actually makes sense renewables will dominate
3) Message boards will still be full of people claiming we should run exclusively on solar even in places like Norway and Canada