It also seems like a bit of a game of whack-a-mole. UA put logistics/distribution centers under threat (wildberries) and refineries under threat, so the Russians moved their scarce air defense resources around on the map in an attempt to cover those, but oops, that left little or nothing covering the yandex datacenters and similar. There's not enough to go around to cover all of the possible geographically distributed pain points in the economy.