[batat]

But they're already doing it.

More than 17 millions of IP addresses were blocked in 2018 [1][2] including large segments of Google/Amazon/Azure/DO/Linode etc. Although recently roskomnadzor unblocked most of them (perhaps due to the spread of DPI among internet providers, so they able to deal with https now and act more accurately), but ~800,000 IPs remains blocked. The government doesn't give a shit about creating a bad reputation for online business in Russia. Instead, actively engaged in "import substitution", e.g. making Сhina-like isolated payment card system [3] or spending millions for "national search engine" [4] (currently bankrupt, AFAIK). They are seems to be totally OK with isolation.

[1] https://www.theguardian.com/world/2018/apr/17/russia-blocks-...

[2] https://en.wikipedia.org/wiki/List_of_websites_blocked_in_Ru...

[3] https://nspk.com/cards-mir/

[4] https://sputnik.ru/