bitcoin fails the moment a monopoly forms in mining; we call it a 51% attack
Why and What are the chances?
I disagree. The incentives drive miners to have a modicum of integrity. Besides, we’ve seen 51% accumulation on mining before and bitcoin has survived them all.
We re already there
Only if the attack is actually executed.
Although I dont follow Antonopoulus since he mastered Ethereum maybe this helps https://youtu.be/JDZVW4hri2g?feature=shared