Anytime a company says it "can't" fill positions, it's because they're not paying enough, they're unwilling to train, or both. One those few things in life that really is that simple.
Effectively you will either do the repair in the timeframe set by somebody from a desk, or you are not getting the 6 figure.
And I can already see pencil pushers making limits tighter when too many people would be able to fit in them. So only way to win is not play.
It's not up to me to decide if a given employer does or does not pay enough. If people don't want to work for your company, then you're not paying enough relative to your expectations around the job. That's not anyone's opinion, it's just how prices work.
I agree in principle though, the people exist and can be hired
It definitely isn't. Here in Germany I could redirect you to a dozen small businesses in the trades I personally know that are starved for young people and that pay better than a decent chunk of degrees, but vocational and blue collar work even here, and this is in my experience even more common in the Anglosphere, is just deemed unattractive by a significant chunk of the workforce.
It's so bad that I know a handful of people who'd even pass the business on because their own kids didn't want to stay in the trades but go to uni.
Trades people like to compare total comp but never talk about working conditions, upward mobility, how much they drive or whether their employer provides their tools.