I guess all predictions age like milk, but here's one:

There's a law of diminishing returns at play here, and doubling the energy cost of training to wring 2% more performance out of the technology isn't going to be very useful, because most of the problems it is capable of solving will be solvable with the previous-gen 98%-as-good model.

("there's a law of diminishing returns at play here" is an article of faith. But then, so is the belief that these models will keep getting better).