I live in Pittsburgh, and have been to DC, Vegas, and NYC within the last year and I'm not seeing this. Amazon, UPS, FedEx, Uber, Lyft, and USPS had to draw their new warehouse and driving hires for this delivery economy from somewhere, and mostly it was from people working in service industry jobs. I have friends who are making $150 a day delivering breakfasts and lunches on bicycles downtown. I don't see supermarkets understaffed, mostly big retail stores like Home Depot, and fast food joints, but they're not closed. Construction is still going full tilt, but it never slowed down duing the pandemic. Are white collar firms going out of business because they can't find anyone to work? Not here.

One thing I have seen is that when someone quits a job that doesn't require formal training, as long as language is not a barrier there is a worker from south of the border who is ready to work that job. I saw many, many hard working Spanish speakers in NYC. I went to an Irish bar in Midtown for dinner and the shepherd's pie was fine, but the entire staff was Hispanic including the bartender.