Well, there is mountains of indisputable evidence that illustrates how the Tea Party was funded by billionaires
I wouldn't mind some of those billionaire's funds being sent my way. No doubt there were some of the events that may have had some sponsorship as you suggest, and certainly a great portion of the anger and energy from these groups has been redirected to help support sell-outs. Everything I've ever been involved with has not had a single dime of that money so I know for a fact that you are full of it to even think that it is strictly the actions of a couple of billionaires.
None the less, your "mountains" of evidence completely betray the fact that there were millions of people who did come out to these events in protest and did want to make a difference politically. That they've been betrayed from the principles that they went to support is sort of sad.
The problem I've seen is not really that they are delusional, but rather that they are extremely naive in believing that the officially published rules and the proclaimed ways of doing politics (aka showing up to meetings and speaking out, writing letters to members of congress, etc.) actually work. Especially signing some sort of silly petition. Most of the people I've met simply don't understand hard ball politics as it really is the first time they became politically active. When they realize that being politically involved is a whole lot of hard work of knocking on doors and really digging deep to try and get support on some issue or the other, most of them pretty much fade away and just bicker on the sidelines.