If only it were that easy. The players who crush the MTT tournaments have a special skill set that enables them to consistently be among the top 2 or 3 % of the top 1%. They know when to push and when not to push; they know their opponents' calling ranges and pushing ranges; they are always aware of their image as perceived by the rest of the table, and they know when to switch gears.
They know how to minimize loss and maximize gain; and they know how to do this on each of dozens of different textured flops by spotting and understanding small differences that others might not even notice.
They play against an opopnents' range of hands, and as each street progresses, they rule out parts of the range until they have a fairly precise idea of what the opponent holds. This enables them to make tough folds when other people would just stack off and say "Oh well, cooler," and it enables them to make thin value bets on the river when other people would just timidly check behind.
And I am sure there are 5 or 6 other things I am not even mentioning here.
Because of the nature of the game of poker, lots of people think they can excel and reach the top ranks even though they probably never will. Just like an any game or sport where results are a direct result of one's own performance, most people aren't going to succeed no matter how hard they work or how hard they try.