This law is wreaking financial havoc already, in the form of taxes and rate hikes in effect right now on many services and goods. Once they pay, citizens of Virginia and elsewhere will not be able to recoup these costs. If the harm has to be to the Commonwealth and not its citizens, then the individual Michigan plaintiffs should certainly be able to meet the irreparable harm standard in their lawsuit.
This is why I hope the AG's are working on a stay of this until the Constitutional issues are resolved. If the law starts being executed, Virginians and the rest of America start being harmed.