Sorry mate but while what you have said is undoubtedly true, it is not a new phenomenon. For every club in the lower divisions trying to improve and climb the ladder, there were always packs of wolves hovering to snap up their best players and prevent the climb from being sustainable. We were for a long, long time one of the alpha predators. Imagine if every fans of club in the old 4th, 3rd and 2nd divisions had taken that attitude? Football would have died off in the 50’s.
it can be done, Leicester did it, Tottenham have displaced Arsenal as one of the sky 6. Chelsea and City did it (albeit with massive investment). We can also do it, we just have to stop pissing our money up the wall on show biz signings and actually build a sustainable structure throughout the club that provides alternatives to players who get sold, poached or crocked.