nah, replace unemployment benefits with the summed salaries of the employees, since it's probably fair to assume employees spend most of their salaries in the country where they live.

also, you seem to imply a scenario where the company is kicked out of the country. That does not recoup any taxmoney to the state. It also likely doesn't make the infrastructure cheaper to maintain or any less desired, so the correct equation is just that you'd loose whatever taxes they do pay (surely they don't dodge all of them),and the sum of the salaries of their employees, plus whatever service the company provides, and you gain nothing.

"you do the math"

edit: missing "don't"