What else is new?
This is how companies WORK, folks. Someone starts something new and exciting, and it creates a fan base- and then a following. It's good, so people want it. Then, it gets bigger, because the owners want to bring it to more people. Then it gets sold (or starts selling stocks) and it becomes a corperation. Ford, Microsoft, Apple, Ben & Jerry's Ice Cream, Ebay, PayPal... these are ALL companies that started "in some guy's garage" and have grown from there into major corporations. It's how companies are MADE, mostly.
Works in music, too- anyone heard of They Might Be Giants? You can buy their CDs at Barnes & Noble now, and at Wal-Mart. How about Nirvana? or Elvis? both were major anti-establishment artists in their day... and are now being used in advertizements and on television.
It happens because the young and hip grow up to be the middle-age businessman, and they take their businesses and music tastes with them. Simple enough.
The question is- will these corporations take these little open-source businesses and keep them good- like Ben & Jerry's... or will they make them evil, like Paypal. Only time will tell.