Google have monopoly on search (up to 90% in some markets). So anything they do with AMP is anti-competitive, for example.
Google have monopoly on business email, close 85% if you trust reports from Datanyze [1]. And now they are pushing AMP for email with exactly 0 external input [2][3]
> the exclusive possession or control of the supply or trade in a commodity or service.
"his likely motive was to protect his regional monopoly on furs"
> the exclusive possession or control of the supply or trade in a commodity or service. "his likely motive was to protect his regional monopoly on furs"