Since the Boston Pro teams started caring again with the Patriots' win 1st SB win (and the Yawkee Trust was forced to sell the Red Sox, NESN and Fenway Park), no one had any time for college sports. By the time 2003 rolled around, one winning season ran into the next and the fact the Sox lost the ALCS only made fans hungrier for 2004 (The A-Rod hot stove situation certainly fanned the flames). Pro baseball runs into Pro football, and by the time the Patriots were done, it's time for spring training again. Things only got worse in 2007-08 when Allen and Garnett came to Boston (along with the Sox winning their 2nd WS in 4 years), and hit a fever pitch in 2011 when the Bruins won. The NBA and NHL playoffs run into June, at which point the casual fan starts all over with the Red Sox.
I don't really blame the Boston Sports fan though. Broadcast journalism doesn't pay anything, , let alone college, any mind outside 128. The high and mighty Jerry Callahan belittles anyone and anything that is not pro sports (or right wing) as unworthy and while NESN is the New England Sports Network, they even gloss over Western MA and Connecticut in their weather reports (they typically give temps for in Boston, Worcester, Providence, Nashua and Portland). The EEI morning show used to make fun or John Meterparel's play-by-play of BC football. It may be all jokes and giggles at the time, but that sinks in to peoples' psyche to a point that they will ignore the broadcast. Even the guy doing the sports flash reported with a tone of amazement (John Risch, I think) when UMass reentered the top 25 a couple weeks ago. The only show that may give Western MA and or CT any lip service at all is Planet Mikey and that is only because Mike Adams is from Manchester.