Why telco companies think it's still 1938

Trying to get bandwidth at both offices for an internal voip solution. The companies that I've talked to have all been really pissed off when they finally realize that they're not going to sell me a voip system. I guess that's the bread and butter for them. They don't make money on just bandwidth and channels...whatever. It's a real challenge to just find someone willing to drop off a T1 and walk away.