Michel Wuyts met de versnelling!
As has been said earlier... the Vuelta might be shortened but can expect to see Guillén hiding behind the ASO if it's actually SERIOUSLY threatened; Zomegnan will tell McQuaid where to stick it. RCS will take their races from the ProTour, and since ASO's stake in the Vuelta is too high, they could be put in a difficult position.
But, ultimately, they hold all the cards.
Do any of you follow motorsports?
The thing is, what McQuaid wants is something like F1. Everything's under one easily controllable umbrella, he can pick and choose what the important races are, the same people are at every race, and the FIA are in charge and everybody has to jump to their tune. They have their favourites, of course, but that's just part and parcel of the competition.
Unfortunately for McQuaid, cycling is more like sportscar racing. In that, you have teams that simply can't afford to do ALL the sportscar racing in the world, so you have a number of regional series (ALMS, Asian LMS, LMS, FIA GT, JGTC, Grand Am, etc etc etc) with various classes of racing; some with everybody at the same level (GT1 World Series etc), some with multiple classes of racing (ALMS, LMS). The FIA set a variety of rules for the different classes of racing, but ultimately, sportscar racing is about a small number of endurance events such as the 24hr Daytona, the 12hr of Sebring, and most importantly, the 24h du Mans. Everybody who has a sportscar wants to race at Le Mans. The exposure there is just so much more than the other events. As a result, you get the big teams swanning in for warmup races at whichever series is convenient for them, and the FIA set their regulations, but ultimately, when the ACO (who run the 24h du Mans) set THEIR regulations, unless the FIA rules are so close that the changes can be made easily and still compete under both sets of regulations, then nobody will bother racing the FIA's series, because they can't get in at Le Mans. Therefore, the ACO's rules become more or less the default, and anytime the FIA get too shirty, the ACO just threaten to exclude all the FIA-series teams, and the ACO usually win or get a compromise.