I think this is still a little different than what’s happening in collegiate athletics. In most of the examples you used, those professional coaches don’t have to worry about an entire roster up and leaving at the end of every season. Mid-majors, who have to rely heavily on accurate scouting and development systems, are extremely vulnerable to poaching and tampering from bigger schools. This allows schools with larger collectives to mismanage or misjudge their own players throughout the year and just recover by buying someone “better.”
Contract hold outs and contract renegotiations are typically settled internally between the player and their respective pro team. There isn’t necessarily any external shielding of a bigger school “buying” away your players because in pro sports there are salary caps and franchise tags etc. If a star demands a trade, the other team still gets some sort of assets back. In college the smaller schools are just out of luck and forced to start the cycle over again.