While Obama was President, the conservatives could pass their do nothing repeal and get everyone on board, but that would never happen now that Trump is President and Reps would have to defend the outcome in their districts. It just isn't going to happen.
What is going to happen? We are going to have a "law and order" President not enforcing the law, i.e. Obamacare? Regardless, we get Obamacare and whatever "bailout" is down the road, which isn't going to be anything like repeal and replace, it will be much worse.
Simple, it already has passed the House AND the Senate. Few, very few, who previously supported the repeal would dare face the wrath of the voters to now change their vote and oppose the repeal.