@Jim K.
@Matt P.
@James Carollo
I'm going against the grain here.
4 year degrees (and higher education) offer more in life, and will always have their place. There's exceptions, certainly - and we can list them.
However, most trades take all of a 40 credit hour class to learn, at least to enter the field. I'm wiring our 950 sq ft addition and it really, really pisses me off that I'm not allowed to do that on our investments, as I'm a licensed electrical engineer.
I'm not a big proponent of trying to increase substantially trades education. I think something needs to change but most owners of service/contracting companies are just body shops, that offer very little in terms of career advancement, growth, etc. This can be solved by more open minded owners that diversify their businesses and offer more. The simple business model where an owner lives in a big house, extracts value from their employees/1099s, practices multi generational nepotism, and encourages unethical business practices by bidding 30x projects at 400% margin to get that one project from poor ol Betty Sue - this is what needs to change to get more ethical and capable entrants into the trades.
Anecdotally I haven't really noticed reduced supply in my market, but we've developed some helpful relationships over time with our go-to plumber, among others.