I doubt there will be a technology that can reliably exclude unsolicited or commercial email. How will the system know, what's unsolicited or unwanted? It can make a guess and that's what the big ones do. But it won't get better than this. I don't think there will ever be an alternative where this could be opposed.

As for unsolicited, this is already taken on by the GDPR and if you're a company that wants to sell their stuff in the EU, you pretty much have no choice than to adhere to these laws.