Almost certainly, I'd say.
You only need to go back as far as the '80s to see Lendl won 10 and 15 titles respectively in '81 & '82. He nearly repeated the feat in '85 & '86, winning 11 and 9 titles respectively. Connors did it in '73 & '74, and Borg (I think) did it three years in a row from '77 to '79.
Since the tour has "matured" I think it's become more difficult; there's not so many individual events scattered around the globe any more because there's one unified tour, and the top tournaments now attract all the best players every year. Still, statistically speaking, while Federer's numbers are admirable, they're not completely off the bell-curve the way someone like Don Bradman is in cricket. I'd be surprised if it didn't happen again within the next 20-25 years.
Last edited by Monsieur_DeLarge; 09-11-2012 at 10:03 AM.