Well, obviously people who lose their jobs, gets downsized, outsourced, or just fed up will move out. That much is clear. Income level is relative so someone making a decent salary could move out and still result in an increase in the average wage in CT. You harp on UBS and RBS, which of course are in CT because it's cheaper than Manhattan, yet just yesterday Aetna, Travelers, and GE mentioned the disappointing state of CT. Those companies have been in CT forever and probably would have moved years ago had it not been for their long-term commitments. Companies have been sending jobs out of state for years. Poll after poll shows that CT is flailing along well behind other states. But if you think everything is very rosie in CT, I will accept your opinion.
And I don't think its just low income people moving out. CT is very liberal with the cities and with low income people. These cities vote about 105% democrat for a reason.