And how long do those 3 mining pool operators need to doublespend to destroy trust in BTC.
Less than ½ hour,
I'll apply the feedback NotATether gave you to this:
Take this guy's posts about Proof of Work with a grain of salt.
they could become insanely rich in a single day, and no longer need to run a mining pool.
And yet, it hasn't happened for 13 years. Your anti Proof of Work propaganda is flawed.