Yes, and dont foget Moneymaker was primarily an online player, which added to his "everyman" persona. His win really accelerated the growth of PartyPoker.net and other online poker sites, which all taken together with the other factors mentioned, led to the unprecedented boom in hold'em poker.My point is the prize for the "Main Event" had been $1M since 1991, but didn't go main stream until MoneyMaker won (2003) and more importantly there was a massive shortage of sports content with the hockey strike of 2004. So networks were scrambling to catch the public's eye with something. It was a bit of a perfect storm for poker. However since then it continued to grow exponentially for sometime.
Prize money had been substantial for quite some time before poker got popular.
Even though a relatively unknown may come through and win a big televised tourney every year or so, much like pool the same big names are more often than not the favorites at any tourney they enter( Ivey, Negreanu, matasow, hellmuth, saliba, owens, etc.)