Why, you ask?
Is it because we've filled up all existing #TLDs and ran out of space?
Or is it because consumers, widely recognized for understanding so well the intricacies of the internet, are clearly asking for more TLDs?
Or could it be because ICANN will charge applicants $227,000, and if they get even half the number of applications they did in 2012 (1,930) that adds up to a cool $220M?