There comes a time when being polite and easy to ignore doesn't work any more.
ftfy
But even with that, the third party candidates MUST get
significant popular support.
If they can't even do the minimum of getting their candidate on
every ballot, then their support base is insignificant.
Perot got as much support as he did because he had the money to make average americans aware of his policies, and convince them that he was worth a vote.
If you can't spend $50-$100 million during the preseason (prior to the major party primaries) and that much
per month leading up to the election after the primaries, you simply aren't going to reach enough americans no matter how popular your message would be if they heard it.
And unfortunately for the third parties it's cyclical. If you aren't popular, you aren't going to get the funds. If you don't have the funds you aren't going to become popular. The bipartisan monopoly works because the bar is too high, and they keep it there.
Perot only got as far as he did because he spent his own money for the "down payment" so to speak on his campaign, which made him popular enough to become a viable candidate, and then others started supporting him financially and in other ways.
I think the only way a third party is going to win the white house is if they first get a significant base installed in congress.
You can't start reform from the top.
And while many claim a simple change to runoff voting would be better, I suspect that it would only be a matter of time before two parties figured out how to play that game too and continue the lockout. Voting reform alone is simply not sufficient to move the population.