Reagan himself compromised. To get the funding he wanted he had to let the Dems expand spending (and they promptly turned on him and accused him of expanding government).
My only concern for the Repub Party is that they already have the state-to-state infrastructure in place and it would be easier to utilize that than to build a new party from the ground up (and to not have a so-called conservative party to compete with and the Dems to exploit).
Tell me where the Democrats are compromising?
Tell me what concession the GOP got on the last debt ceiling increase?