I'm all for everyone making good money. I personally would not object to subs moving up - that is how you grow your business. I just haven't ever had a prime actually proposition my employees and subs while we were on a project - and I do have non-solicitation and non-complete language in my contracts. Not all of us are out to screw people over. That sucks in both directions.
This is CABL.com posting #370432. Tiny Link: cabl.co/mbIwS