I've said it before on this subject so apologies for the repetition, but it seems pertinent.
As a general rule, all clubs lose their better players to bigger clubs. Always have. We took the best player from QPR, Blackburn, Reading etc, and so, in that respect, can't complain about losing them to the big boys.
There is a difference, though. QPR, Blackburn, or Reading can realistically hope to one day replace us as a mid table premier league club. If they run themselves well for long enough then, with a fair wind, promotion is realistic. If we make a few bad decisions or have some bad luck, we could easily be relegated. Most of us accept that we will go down one day, even if only due to the law of averages. In other words, QPR, Blackburn, or Reading could take our place. Then they would sign our best players.
What the article shows is that there is little to no realistic prospect of us replacing one of the big boys, no matter how much we expand selhurst or how well we trade, and even if they make poor decisions for a sustained period.
Look at Newcastle and Villa. Huge clubs, big grounds, massive fanbases, both put together very good teams and achieved cup wins and champions league football. End result? Teams broken up and best players sold off to the bigger clubs, even though they haven't performed as well as Newcastle and especially villa.
That's the difference. There is a reasonable chance of QPR replacing us in the pecking order, but almost no chance of us replacing Chelsea.