Not necessary, as actual engineers and electricians working for such companies could also refuse to make that connection. Also it's likely that sanctions will be more severe soon as Russian troops will do more crimes.
It seems very unlikely that they could launch another front against Finland and achieve anything, even shelling a city.
As Ukrainians push more resources towards the east Russia's problem might be that such artillery isn't quite mobile, there's no run-and-gun capability there, while weapons capable of taking them out are man-portable.
Despite that, I don't see a happy ending for the Ukrainians here. As much as Russia has already lost, they can't accept defeat in this without the power structure suffering what might be a deadly blow.
123m spire ect ect
(be sad)
As per site guidelines
As long as there's no sanctions against Yandex itself, then there's no legal reason to prevent that from happening either.