I understand this train of thought. And I would agree that the lesson, that the Maguire case has told, is a valuable one. But I highly doubt, that we, in the situation we are in, should now think, because we made a mistake (with Maguire) and we understand its causes and effects, are now equipped to assume that we can gamble on the same level and then succeed. I've never heard that somebody called Fabinho as being integral to Liverpools football or success. He is a good player but Liverpools performances do not fall or stand with him. I am sure, Klopp could make use of Rice as well. But he probably could make use of Fred or McTominay as well.
As good as Rice might be, I don't see the slightest chance, that he could be some sort of shortcut to actual success in terms of titles. Not with the other areas we struggle in (Fullbacks, Strikers, potentially even Wingers). So there is no point in getting Rice now and cripple the chances of closing maybe one, two or three gaps.
We just shouldn't do it. Not because Rice isn't a good player. But because no player is singlehandedly so good that he could transform us into winners. It will take at least three or four, maybe even more player to get there and putting all your money on one card, a card that has spent all his career at Westham (comfort zone) never really has challenged against CL teams would be extremely dumb/shortsighted. Even if we bring him in and he succeeds it would be a mistake. Tuchel doesn't need a player like that, Bayern doesn't, City doesn't. If we want to spent stupidly big on an Englishmen, it should be Bellingham, as he seems to be a very modern player who works in a very modern team. (And just for protocol, I'd consider spending 100 million on Bellingham as a mistake as well).