"Looking for Microcontrollers. Will pay Bitcoin. No fakes. DM me!"
Joke. Although, it's getting pretty shadey now. People are scalping STM32s. I was very tempted as someone had a sealed Mouser bag of 3 x STM32F411CE's for £40. (What is their list? About £6 each?)
Mouser said they have 932 STM32 microcontroller products. I asked, "In stock?", they said, emmm.... 7. 6 of which were F0s. I did get 2xF411REs from Farnel a few weeks back. Thinking I should have sold them on now.
What concerns me much more is the disappearance of the older chips. Chips which are the mainstay of the hobbiest. Chips from the 90s and 00s. Chips like the TI PCMnnnn's BB chips. PCM270X, PCM510x, etc. etc. While I can see production of the leading each 9 pin BGA 2.5mmx2.5mm ICs ramping up in production again, but who is going to fire up lines of those kinda of "last year" chips? Chips that been around long enough for people to write Arduino drivers for them.
Maybe it's just distribution and there are still stock piles of those chips, or maybe there are plenty of older generation fabrication lines out there people will blow the dust off and start making 10 year old chips again.
I have even gone as far as ordering a few single ICs from AliExpress to see if I stand any chance of them not being fake or b-grade trash. I'm thinking I might get luckier with the older generation chips like those PCMnnnn rather than the STM32s. Although there does seem to be some obvious signs. For every seller with an STM32F411 at £3.70+£2.00 shipping, there are 2 who will sell you half a dozen for that price! Although they never seem to get the description quite right and don't even bother to take a photo (or even google a proper photo) and use a blurred image of a generic chip.