Barcelona didn't sign any "established stars" until they achieved their sextuple.
They bought Ronaldinho from PSG.
They bought Eto'o from Mallorca.
They bought Deco from Porto.
They bought Yaya Toure and Giuly from Monaco.
Besides, Messi, Xavi, Iniesta, Puyol, Valdes, Pedro, Thiago, Busquets, and even Pique and Fabregas are all products of their academy.
If you think that's similar to the way Real Madrid have been buying players in the last decade you are clearly in delusion..
Besides, Barcelona were on the verge of bankruptcy when Laporta came to the club, and he managed to get them back to the top with very limited resources, unlike the way Chelsea and Man City have gotten to the top. And if his work doesn't deserve respect for you, then at least don't twist the facts just to taint the club or the man's work, because you are completely losing objectivity here..