There's certainly an element of Sky going out of their way to sign the best riders for the job. Thomas, Poels and a couple of others could be team leaders anywhere else but riding for SKY with all the resources available. Best doctors, Soigneurs, mechanics etc would be as much of a motivating factor as money because they know they will get rewarded when they help Froome win.
I do find it a shame that it's built entirely around the Tour and yellow jerseys. Yes, Thomas won Paris Nice (with a great solo breakaway) but greater concentration on the classics or the other grand tours would be nice. You could take a subjective view and state Tinkoff had as good a result. Polka dots, Green and a greater number of stage wins (I think but haven't actually looked that one up).
I've always felt the TDF overshadows the rest of what cycling has to offer, particularly in the UK and the US and for the teams nominally based in those countries but that is currently where the best markets are for selling bikes, clothes and equipment etc.