It might technically be true, but it's also like saying Bill Gates needs to be smarter with his money because he doesn't have as much as Elon Musk.
Poor analogy. Gates nor Musk are operating sporting entities or football clubs.
LFC have been a major success since FSG took over. They were near Administration, they saved them and provided stability and a financial framework for success. They are operating within their financial mean (as they don't provide extra personal funds nor want loaned funds to be spend on acquiring new players, only infrastructure) it still does not mean they can compete in the same financial way than the like of Man City. On the sporting side they have been challenging them for many years which is a huge testament of Klopp top managerial ability and savvy transfer deals.
FFP is/was supposed to provide that upper limit and financial limitation with possible sanctions but many clubs have abused of it and most likely will get away with it (still pending sanctions for Man City and Everton). Chelsea have also abused it the past year, we will see what will happen with them.
Somebody brought Barcelona, it's not very similar, they are operating in one of the few league that have put in place very recently a very strict financial framework to work with to prevent huge losses. The transfer spending for la liga has taken a huge hit this past summer, even larger clubs have not spent as much. I would love the EPL to adopt that model.
The frustration come that even if you operate within that financial framework other sporting entity have abused of that system in place to get that success and nobody cares, they are all billionaires (sic). Just claiming, you have spend X amount and have no right is a way too simplistic, obviously LFC are a huge club with huge revenues (thank you FSG for that) but to stay relevant you have to compete with sporting entities that abuse the rules in places or just disregard them.