When compromise has been dismissed as a weakness, the zero sum game will flourish. Ryan and McConnell, as well as the P-e, are on a highway and will reject anyone who suggests an even minor detour; time will tell if they can lead or follow.
Day one suggests the power of the caucuses have the ability to block the road and/or change the direction - Trump has already walked back on some of his promises, and Members of The Congress, self serving as too many of them are, have taken notice.
PS It should be noted that message boards such as this one, and all of social media, can and has impacted policies and Pols, thus, those of us who reject much of the Conservative and ultra conservative agenda must be vigilante, and continue to voice our objections when we feel the powers that be are leading us to the edge of a cliff.