I think, unfortunately, what so many are missing is the fact that this fight right here (the last chance to stop Obamacare) is the fight the tea party movement has building up to for the last four years. Not only is this fight hugely important for that reason alone, even more so it is THE FIGHT that will shape the direction of the GOP and who leads it for years to come. For millions upon millions upon millions of Republicans/conservative voters who have been active in tea party rallies since 2009 and getting involved in trying to take over the GOP at the grassroots level since then this is the only political fight of the last half-decade that really, really matters or will likely really, really matter for some time to come.
Right now is the opportunity for a triumverate of Paul/Cruz/Lee to TAKE OVER THE leadership of the Republican Party. Let me repeat that. This is a ONCE IN A LIFETIME CONFLUENCE OF DEVELOPMENTS ENABLING THE BEST LIBERTY MINDED SENATOR IN OVER HALF A CENTURY (who just happens to be Ron Paul's son - and if he takes advantage of it) to, in the hearts and minds of tens of millions of conservatives/Republicans become the moral/spiritual leader of their party and their movement to "restore America."
Even if their effort to defund Obamacare ultimately fails, in fact even more likely if it does fail, Paul/Cruz/Lee will be the leaders that untold millions of voters will look to going forward to take on both the establishment of the GOP and the Democrats, and one of them (whomever amongst the three they choose to throw their support behind for POTUS in 2016 assuming they continue to work as a team) will almost assuredly be the top-tier conservative choice to take on the establishment's choice.
And this time around, and I firmly believe this having been around lots of Republican voters for a long time, Paul/Cruz/Lee will have a very good chance of winning the nomination. I promise you, if Rand plays his cards right... in Texas for example.... pretty much every single person who voted for Cruz over Dewhearst in last year's Senate race in (you should have heard the boos that establishment hack got on the floor of the state convention) will vote for Rand if he's the conservative choice supported by his teammates Cruz/Lee. And, it won't matter if they call him an "isolationist" and it won't matter if they call him a "whacko bird." In fact, everytime they lump Paul in with Cruz/Lee or call him a "whacko bird" he'll only be winning more votes against the establishment's choice.
I'm pretty sure Rand didn't want it to be here and now... but whether he likes it or not this is his Rubicon moment.