As the premier batsman, you will have control of where you bat. Before very long in your career, the likes of a Vivian Richards will have the choice of where he bats. Had he wanted the "easier" position of four or five, he could have had it. He chose not to. He evidently wanted to bat at three. Tendulkar preferred four, and he benefited from it. Well, probably.
A person choosing to bat three is (possibly) disadvantaging himself. If he performs less well than he would have at four or five, it's his fault. He has made life more difficult for himself. If someone feels he could have performed better at a different batting position than the one he occupied, it's as much his duty to get the position he wants as it is to practice and improve his game.