AI-assisted answer:
Busy roads, so we build more roads, right? Except no, it just makes more traffic.
Give more time for people to complete a project, and they'll still just end up with a crunch time at the end anyways. "Work expands to fill the time available."
People make more money, then they just spend more money. Buy a bigger house, and it gets filled with more dubious value stuff (conversely, move into a smaller home and realize how much pointless junk you bought) "lifestyle inflation" or "consumption smoothing"
Project behind schedule? Throw more money and people at it, right? But does it help much?
A lot of modern software is arguably suffering from major inefficiency bloat, both in file size and hardware requirements.
So it's probably not quite as "obvious" of a solution to just build more power -- there has to be some incentives to encourage efficient usage instead of just throwing more resources at a problem, otherwise it encourages a long-term build-up of inefficiency.
Here's the other side of that, which is equally as somewhat counter-intuitive:
https://en.wikipedia.org/wiki/Induced_demand#Reduced_demand_...
There's also the matter of the potential inefficiencies of a plant that produces way more than is actually being produced, in which case it's a very expensive waste -- afaik most power plants can't just dial up/down their output to a large degree. Then there are environmental, social, and civic problems, which I guess are easier to bulldoze over in countries that might give less consideration to its citizens. I'm sure there are plenty of other considerations, which you can probably get a good critique on from your favorite AI service.