Further, selling GCP to AWS is not how we "break down monopolies".
as long you can rent rack full of servers and use it easily there is not that kind monopoly.
The logistics at scale can't just be waved away like that; current providers would have at least a 10 year moat at scale to a new competitor even if they did nothing. And you can bet if a new company came along that was a serious threat the current players wouldn't sit idly by.