Alexander Isak has had a good run at Newcastle, so it stands to reason why Liverpool is interested in him and it looks like Isak is keen on Liverpool too. Now we just have to wait and see whether all of this will come true, and if Newcastle set a reasonable price for Alexander Isak, then the transfer looks likely to happen.
Seriously, the idea of packing all good players into a single team while the others are left to struggle with some bunch of average players don't even make much sense. Liverpool already have a lot of players and attacking options that are helping them do really well as a team, bringing Alexander isak to join them who stands as the toughest and the brain behind the recent success of Newcastle will only make the league to remain in the hands of the usual teams that have these kind of quality player.
If the deal goes through and he joins Liverpool, he's going to be a huge threat and become really better because of the assistance he will get from his fellow teammates that are also very good in their own way. Add up a goal scoring machine like Alexander isak to Mohamed Salah and watch Liverpool going completely into beast mood.