I'm more skeptical that IDEs will be dominant a few years from now. It's certainly possible. But I also find it plausible that AI continues to do more and more software development work, and humans less and less.
> the tokens are already starting to come less cheap
It may be true that frontier models have become more expensive at times (there are counter-examples though). But the stronger trend is the cost of running a model with fixed capabilities falling over time. That can't continue forever, of course. But I don't expect the fundamental costs to rise. Are you expecting providers to significantly increase their margins?