Making Games is kinda like making art,or making music,I even compare it to making food.
There will always be someone who will download your game.People look for new things to enjoy everyday and to say 95% of gamemakers starve is alittle farfetched. I know many of people who never brought a game to any market but still make money from other aspects of the industry.
The money isnt just made from the Marketplace,money is made through coding,through the artwork,and an array of other ways.
Just make sure you do your research and study the market and the competition if you plan on trying to sell to the masses.
Set your goals low at first and build on that.
Its not 100% that you will become rich but the chances are higher than you making a platinum CD like Jay Z 10 times over.
Times have changed and we are now in the Era Of The Indie Developers.More and more Million dollar companys are running to indie devs because money gets you alot of things but Creativity is one thing you can not buy.
but enough of me going on and on.Take a chance and try to fullfil your dream.I hope to see all your names in the credits of a major games! Good Luck