You're strongly implying some kind of targeting by Google. Whereas the parent comments above you indicate simply a lack of caring by ProtonMail to improve its ranking or a lack of free general support by Google to any website that happens, not just ProtonMail.
Asking Google to be responsive to any website demanding special treatment for higher search rankings is unreasonable. Best practices are published and tools are available. It's hard to see monopolistic abuse there.
The only difference is that Gmail (and other Google products) are listed when you, shockingly, go to google.com. Are you saying Google can't mention Google products on google.com? Do you think gmail is somehow not as popular as it is and wouldn't rate the #1 spot for searches for email?
Asking Google to be responsive to any website demanding special treatment for higher search rankings is unreasonable. Best practices are published and tools are available. It's hard to see monopolistic abuse there.
The only difference is that Gmail (and other Google products) are listed when you, shockingly, go to google.com. Are you saying Google can't mention Google products on google.com? Do you think gmail is somehow not as popular as it is and wouldn't rate the #1 spot for searches for email?