However as far as I know there are no question marks over any of the riders
Running a successful team is about selling advertising space. The only event that penetrate an audience outside the world of true cycling fans (which is limited either geographically or numerically) is the Tour de France. This is the event that reaches markets completely untouched by the Vuelta, Worlds, Paris Nice, etc, etc... Therefore it's the key component of any sponsorship pitch for a top team.
So being the winners of this event would seem to be the greatest marketing advantage. But (at the moment) this is clearly not so. Otherwise the most successful team at the TdF in recent years (Tailwind / Postal / Disco) would be inundated with offers.
So there is obviously something blocking the 'attractiveness' of this outfit, despite having just won the last event. It's patently obvious that saying 'there are no questions marks hanging over any of them (except their team leader)' is not enough. Because we're at a time when the whole of cycling has an enormous question mark hanging over everyone and everything.
And in the minds of many, including the board members of the firms considering their marketing strategy, is this riddle: If we now except that so many of the top riders have been doping, how come one guy (and his team) were able to blow them all away seven years on the trot and again this year? Cycling's hard core fans can debate this until the cows come home, but I think we have passed the tipping point where for a lot of people, they sadly now accept that 'being the most tested athlete in the world' doesn't equate to being drug free.
So Ex Tailwind riders out in the marketing world would appear to be spoilt goods. It will take a new approach and some radical ideas to get companies back on board. If I was a team owner / DS, I would face up to this reality and put together a team in which everyone could have 100 percent confidence. Where they would come from is another issue, but importing someone from Disco, the team that showed the world its true colours when they hired Basso, wouldn't be part of my new radical plan.
So it's not paranoia, just realistic in trying to get sponsors to give cycling a last chance (again).