Of course everything goes in cycles and no club will always stay up on top, not Madrid, not us, not Bayern and certainly not Liverpool. But they are experiencing a booming period for sure, results on the pitch generate commercial success which in turn helps reinforce their results on the pitch, just saying don't expect them to wither in a couple of years, it will take longer than that, I am afraid.
Again, Klopp will be key to them and let's see if he can sustain this success. Also what sets them apart from us and Madrid is that their owners are filthy rich people and they are willing to spend.