"bad" means investors want to make money on their investments, and tech workers want to advance their careers, I guess.

I would define a "bad" company as one that puts profits over people. People includes customers (incl b2b) and employees. A "good" company is one that realizes treating people with respect is a long-term profit driver.

The way you've phrased that, the good companies still put profit first, it's just that they have a different strategy - treating people well to build loyalty etc.

> What would a "good" tech economy look like?

Producing goods and services that real people buy and benefit from.