And when I say technique, I mean any musicality as well

I am studying with a wonderful teacher who is helping me with the many flaws in my technique. Everytime I sit down to his Steinway model D I feel completely lost as the piano I spend the majority of my time practicing on is an older upright.
Within the first couple lessons he asked me what I was practicing on. After giving him a description of the dinosaur, he tells me I need to get a new piano. Then stating with great emphasis that "Every other instrumentalist will spend there live savings on they BEST instrument they can get, except pianists!"
Embarassed, I realize that most ALL of my practicing, even through college, has been on poor quality uprights.
My teacher wasn't shy. He told me that I should try to get the best piano I could afford and then consider saving for an even better one (a steinway model D?) as this was the only way my techinque could get better.
Needless to say I have purchaced a grand
So this leads to my many questions......
Why if the quality of an instrument is so important why is is that many professional music teachers, and students still have crappy pianos?
If music schools want to produce better pianists why not invest is some better instruments?
Why don't we pianist invest in the best instruments if it actually aids our progress? are we cheap? Poor?
