> If AppAmaGooFaceSoft ever stops hiring, if one day the heads of recruiting at those companies say “Nope, that’s it, we’re done, full house over here” then the ripples in tech salaries will be felt across the whole industry. Salaries will be driven down, because working at AppAmaGooFaceSoft is no longer a bargaining chip. It might cause a tech salary “crash”, where salaries drop way closer to the skilled worker median.

This seems very unlikely. Tech is probably very far from being "solved"; and the minute salaries stop being relatively high, that's when people will stop joining bootcamps and getting CS degrees, instead going back to finance or whatever the hot ticket is at the moment. This will likely cause a dampening effect on tech salaries, cushioning any decline in the short term, and creating a serious talent supply problem in the long term, which will just push salaries even higher.

I think that the truth is, tech is in demand everywhere. Because what tech really is, in many cases, is about improving your processes, automating work, and increasing efficiencies in all sorts of businesses - and that isn't something that has an endpoint. There are still many fields that have barely begun to benefit from what tech has to offer.