To be fair, there are already apps that require a mobile phone to sign up, for example, VK, Telegram. And I think Google requires to scan a QR code to register account, so it is easier just to buy a Google account on a black market if you need it for some purpose.
I think you and I move in very different social circles...
I would have no idea how, nor desire to purchase a Google account on the black market, and I do in fact still trust that my web browser can do TLS correctly.
"easier just to buy a Google account ...." for those who would choose to do that in quantity. That is, the scammers and fraudsters for whom this is a financial decision. Which suggests that Google's latest moves shift the needle only slightly against actual abuse at a huge cost to the rest of us.
"Nobody trusts web browsers ..." applies to the publishing side. Content (that is, advertiser) sites and commerce most especially. The prove-yourself hoops that those opting out of that approach (de-Googled Android, privacy-hardened browser, alternative OS) must deal with are mind-bogglingly insane, speaking from personal experience. The Web no longer brings joy.
Incidentally, Google plays strongly in the second space, such that its incentives are aligned with pushing people into the "Google Play Services" ecosystem, and to both its own browser and ad-tech personal surveillance tools.
I meant "corporations do not trust users who register from a web browser and not from a mobile app". Without a mobile app (which allows to collect more hardware identifiers and spam you with notifications) you are not welcome.
Sure but how do I know that the person I'm buying from legitimately owns the account? Won't scam me? Or try to con me out of my existing account? I'm just saying not everyone is as relaxed about that sort of thing.
The price is about $2-3 so you are not risking much, there are reviews and ratings. Of course there are scam sites, but once you buy several accounts you quickly figure out which ones are scam and which are not.
Re: stolen accounts, you can examine account details, history and activity after purchase, check for emails from social networks and return stolen account to the owner. The posting usually also mentions registration period (new accounts are unlikely to be stolen). But it seems that registering new accounts is cheaper than stealing - old accounts are much more expensive.
I didn't use the account for any illegal activity, there are just sites that use Google Account as a "verification" that you are not a bot, and to issue bans. And I am not interested in jumping through the hoops of searching a locked smartphone with Google Services and filing a visa application to register the account. I strongly dislike proprietary software and locked smartphones.
VK has been digging its own grave for quite some time now. Hardly anyone uses it any more. It's speedrunning enshittification with that registration thing but also with the very unpopular post redesign, the removal of custom news feeds, and most recently with shutting off most of the API access for third-party apps, including popular client apps like Kate Mobile.
Nobody trusts web browsers nowadays.