Microsoft is one of the platforms raking in heaps of money from dumb companies trying to jump on the AI bandwagon.

True. But one of their biggest customers is OpenAI. A big part of Microsoft's investment in OpenAI comes in the form of free access to its data centers (which cost money to run, thus costing Microsoft in the short term). By taking advantage of OpenAI's non-profit status, Microsoft was able to write off a bunch of those losses early on as tax deductions.

But they're still losses.

Other firms using Microsoft to jump on the AI bandwagon might help make up the difference. But that's like saying "I'm only doing some of my own heroin, so I still come out ahead". Given the current rate of return on AI investments, the only truly correct investment value is $0.