Interesting! I assume this is financilally rich you are referring to. I think theoratically yes, but firstly you have to set the standard of what rich is because humans always want more. When we are all rich, there will always be people richer than you and according to the new standard, you will be relatively poor.
Secondly, some people just cant get the level of education and knowledge required because of their family/country situation. And it wont be anytime soon that their circumstances will change.
Also, most people will not be able to have the discipline and motivation to do what is required. Becoming rich requires a lot of commitment and they want instant gratification. Look at the amount of dole bludgers in australia
. And what if they dont want to be rich by choice eg buddhist monk.
So imo, 'anybody' can be rich in a free country like australia.
" where there is a will, there is a way"
Cheers
Allan