Barcelona still has enough time to correct their mistakes. . The teams against which Barcelona should have easily scored 3 points, Barcelona drew those matches. There are still many matches left. There is still plenty of time to get back on the Barcelona track. Koeman will probably devise new tactics in la Liga so that the team can be more stable.
For sure they do, but the problem is, we need to decide right now what we want to do (or rather, we even needed to decide a long time ago) for the future. If we strengthen to try and win La Liga, then we'll be stuck in the old mode of doing what we did wrong. Buy a few short term stars and talents to win. And that's not even guaranteed. And put ourselves more in debt which we can't afford.
OR we rebuild and accept we won't win La Liga, perhaps focus on a Champions League or cup run as we do well there, while restructuring from the ground up. This also means letting go of Messi, unfortunately:(
That is the main problem with the big clubs, because they can't rebuild because it causes them to not be in a place that would be acceptable. You think the fans would be fine with it, but if a team decides to buy players who are 22-23 and younger, and just go with that and publicly say that they are trying to rebuild the whole team and want to dominate for 10 years, have another xavi iniesta messi period with the new kids when they are ready, that would be something you would love to hear.
However as soon as league starts and Barcelona is 11th in standings for a while and finishes 6th? You will see those same fans burning jerseys. So, Barcelona have to continue like this, they have no other option to continue like this, that is the only choice. I would love to see them do better as well or rebuild, but it is just stuck at this level.