Of course not. He served his purpose, now there was no logic or justification for it:
After considerable deliberation and reflection, I have decided not to pursue the office of the Presidency. This decision does not come easily or without regret; especially when my potential candidacy continues to be validated by ranking at the top of the Republican contenders in polls across the country. I maintain the strong conviction that if I were to run, I would be able to win the primary and ultimately, the general election. I have spent the past several months unofficially campaigning and recognize that running for public office cannot be done half heartedly. Ultimately, however, business is my greatest passion and I am not ready to leave the private sector.
By the way, never a fan. We need a fighter, but one who is conservative to the core, and in it to win it.