"We had a core team. They had a good vision. They got started, and then the game wasn't working. So [they had] to start again," Detoc told IGN. "Rainbow had to be remade," he went on, saying it's "one of those examples where you try, it doesn't work, you try again. If it doesn't work, we're not going to bring it to you."
Detoc also specifically called out next-gen consoles as possible recipients for the new Rainbow Six game, though that's admittedly something that's been on Ubisoft's mind for over a year. "Could it become a shooter with another name in the end, because the team doesn't want to do counter-terrorist guys? Say they want to be in a mercenary setting? That's possible," Detoc added.
Rainbox Six: Patriots, first announced on the cover of Game Informer in 2011, has presumably been in development for over two years now. A year after the announcement, Ubisoft restructured the team building Patriots and decided to keep the setting that focused so heavily on the moral grey area of counter-terrorism.