Again, not the same.
Google did not cripple their products to work only on Chrome. It did not force customers to install Chrome on their computers, nor had partnerships with OEMs to preinstall its browser.
> Google pushed ads against Firefox and for Chrome on the front page of Google search
I highly doubt that Google, one of Mozilla main sponsors, had ads against Firefox in their Search homepage. They do promote Chrome in Search and Gmail, but not in YouTube as far as I know.
But that is beyond the point. Google uses its own real estate to promote their products, exactly like Mozilla does with Firefox and their VPN and Relay services. Mozilla also bundles Pocket within Firefox, by the way.
It's not great, but I think that a company should be allowed to promote a product in their own spaces, always respecting the autonomy of the user, and without aggressively pushing it.
Which is exactly why Microsoft is and should be in trouble. They not only bundled Teams in Office 365, but also defaulted to or pointed at Teams for every single operation coming from any other Office application.