I feel for you. But I guess at that time you were not deceived. The people you dealt with probably acted in good faith. It is not the people back then, but the people today.
Probably someone should have read the fineprint and when everyone updated their licenses to be explicitely irrevocable, it should have been the time to ask them to update their license too.
That said, I think whoncould know 20 years ago how everything is working out, that wotc and RPGs in genral are still alive. If you all had not decided to go with 3e back then, would you still be in business. Would anyone still be in business in this industry. There is usually not coming a lot out of hindsight. It is deveiving to look at events past and ask yourself: what if.
And still, I think the way the situation right now was handled terribly. And until the new license is out, there is a lot of insecurity and the bad feeling will probably remain if wotc does not go out of their way and make the old or new ogl irrevocable and fair.