By paying them for the 60 days notice period from the day you notify them, that's how.

That probably works in the US but in some jurisdictions (e.g. parts of Europe) -- where I presume Twitter has [or had!] employees -- there are requirements for an actual consultation process before substantial layoffs.

You can give them notice when the decision is yours to make. And the then the termination can be legal at X days beyond that, if the legal requirement is X days notice. I don't see how "I Just bought it" matters?

I don't see how you decide how and who to fire before you are in control of the company, but that's just me