Lets not forget before Pep and Messi they were hardly the most successful European team. Their last 10 years is an outlier of success, not the norm. I think their debt is too much to suddenly turn things around that quickly. Plus they were looking to renovate the Nou Camp as well.
I guess they will place reliance on La Masia again, which isn’t a bad thing. Their strategy of buying big name players just hasn’t worked.
Before Pep and Messi they enjoy similar amount of success as us, so even they are not the most successful European club, they still up there among one of most successful for sure (same tier among Real, Barca, Juventus, Milan, Bayern, Man Utd, Liverpool)
Remember peak Cruyff (mid late 70s), Maradona (early mid 80s), Lineker (mid late 80s), Romario and “dream team” (early 90s), L.Ronaldo (mid 90s), Figo, Rivaldo, (late 90s) Ronaldinho, Eto’o, Henry (mid 2000s) etc did play for them over different period and enjoy some level of success. They have always attracted some of the biggest football star at their peak over different era and won quite a number of trophies too.
Messi becomes first team regular at around 06-07, and Pep starts to manage Barca in 08. Then followed by that, with combination of Xavi-Iniesta and then later Neymar-Suarez, they have enjoyed some of the most successful period in their history for sure.
Before that, Barca has won 18 league titles, 24 domestic cups, and 2 CL.
After that, they had won further 8 more league titles, 6 more domestic cup, and 3 more CL.
If we look at their success at domestic and European competitions over different period:
70s - won 1 league, 2 domestic cup
(Cruyff)
80s - won 1 league, 4 domestic cup
(Maradona, Lineker)
90s - won 6 league, 2 domestic cup, 1 CL
(Romario, Stoichkov, Laudrup, Koeman, L.Ronaldo, Figo, Rivaldo)
00s - won 4 league, 1 domestic cup, 2 CL
(Ronaldinho, Eto’o, Henry, Deco, Messi, Xavi, Iniesta)
10s - won 6 league, 5 domestic cup, 2 CL
(Messi, Xavi, Iniesta, Neymar, Suarez)
It seems ever since early 90s, Cruyff’s dream team era, they have suddenly become major force and has been one of the most successful side in the continent.