That's right. If the House doesn't pass a repeal today, Trump is done with healthcare, and Obamacare stays. Does anyone believe that if the House passed Trump's ideal plan, whatever that might be (if such a thing even existed) on Monday, and the Senate passed it on Tuesday, that Trump would veto it?
No.
This is an idle threat.
I've talked a lot about idle threats and whether or not Trump is crazy enough to make a threat credible when no sane person could make it credible. No, even Trump can't make this a credible threat. It's just bullshit. Why is Trump doing it?
Quite simply, if the House can't pass anything today, it will be a clear demonstration that Republicans can't pass anything across chambers, and rather than have it be a display of Trump's... impotence, he wants it to look like he is carrying out a threat. By failing.