LOL!
Are you seriously incapable of counting? The total cost of those you listed is less than the cost of Messi alone. Have you ever heard of the cost/benefit ratio?
As was already written in the thread above after Xavi, Iniesta and other golden players left, Messi never led Barcelona to victory in the Champions League. Maybe it was worth looking for new Xavi/Iniesta (as Real did) than waste money on Messi?
It was the combined cost of all those players combined with the lack of revenue that took Barca down. PSG bought Neymar, Mbappe and then signed Messi on a free transfer and they haven't broken down like Barcelona did.