Re: "the minister has continued to write to more tech companies"
That's what he's doing.
When shooting starts, the minister for digital transformation has very little role to help with the shooting stuff. Pretty much none, in fact. On the other hand, persuading more companies to take part in the "Special Economic Operation" bringing a complete economic and digital transformation to Russia's economy and markets thereby forcing them into ceasing their "Special Military Operation" appears a reasonably productive use of time.