It’s not a “loophole”. A company can outsource any services it wants at any point it might determine that to do so better served the best interests of the company.
As others have pointed out, your brilliant, essential employee friends aren’t working as independant contractors; they’re working for a firm that finds them work with other companies. Those other companies apparently find them so valuable that they’re willing to lose them to another, higher paying, company. If those friends want to find out their market value, all they have to do is threaten to quit…and see if their contract employer takes them up on it. Given that there is a nationwide shortage in all the job positions you mentioned, I expect that the employer might take them up on it…as they don’t seem to value them very much. As I said, there’s an easy way to find out.
It appears that people are being snarky towards you because you obviously have no idea of what you’re talking about when it comes to the marketplace of labor. Employers don’t just let essential employees become part-time, outside, help. They reserve that role for employees they can replace in ten minutes on the phone with the temp agency. If you think that any political party is going to change the way the marketplace for labor works, you’re a misguided on politics as you are matters of economics and the market. As for employers caring for you, if you want someone to love you, buy a dog.
Btw, it was the Whig party. “Wigs” are something that Dolly Parton wears…on her head.