It's pretty obvious they would rather avoid giving the Dems anything that would be seen as a "win" rather than working together. This covid relief package is an excellent example. It's overwhelming popular and popular even by Republicans. However they know it passing would boost the Dem's popularity so rather than working together to find a middle ground that would benefit their constituents they try bad faith negotiations and sabotage to try to get no deal rather than have the Dems enjoy the optics of passing covid relief. This sort of pyrrhic politics isn't sustainable and is likely to keep damaging the GOP brand.
Part of this is because by nature the conservative agenda isn't sustainable. You can block progress for only so long before it's inevitable. Social issues will continue to move more towards equality, climate change will continue to get worse, automation and globalization will continue to happen. All they can do is try to slow it down to appeal to their base. And again, this isn't sustainable -- and by alienating younger voters they are increasingly relying on a shrinking base to maintain power -- thus all the voter suppression efforts as they are fighting against time.Its not like republicans are ever going to sign 'anti-automation' bills, that would be government control of businesses, they're just going to try and demonize the democrats environmental concerns and call it a day.