Best way to avoid bubbles: Make interest rates the market price for money instead of fixing it to maximise banks' profits.
Why should financial industry take millions from the economy? Where was that wealth earned? Who has to work to actually create that wealth in the first place? Huge profits are followed by "financial crises" or "recessions" but really it's just "paying the piper". You can only BS reality for so long.
The trouble is the "gimmie" class gets all the wealth and the workers pay through unemployment.
Unearned million dollar salaries are theft from the rest of the economy.