Failed in what sense, and for whom? Some people made and are making a lot of (real) money from it (especially the thieves that have executed the numerous heists

Failed in what sense, and for whom? Some people made and are making a lot of (real) money from it (especially the thieves that have executed the numerous heists from exchanges, wallets, etc.) There is a definite ecosystem here that has players profiting from it that would want it to continue.