Ever wonder why Microsoft captures exclusive rights to 3rd party games instead of creating 1st party games? I'll tell you why!!
If Microsoft creates a first party game for let's say, $20 million there is a CHANCE it can make its money back and sell systems. +1 Microsoft
BUT if Microsoft buys exlcuive rights to DLC for lets say Call of Duty (an already popular game), it's +1 for Microsoft and -1 for Sony. Making Xbox look twice as worthy than PlayStation. Also, Micrsoft causes a chain reaction, if one person buys Call of Duty for their system then others will buy Call of Duty on Xbox to play with their friend. The more friends that buy COD on Xbox the more xboxes Microsoft sells and more Money Microsoft makes. ++1 for Microsoft. Of course there are ways for Sony to counter this in different ways BUT it is more profitable to work with what you have than to create new games from scratch and hope they're good. Discuss
Edit: This is why Xbox is more popular in english speaking countries, these are the places with more internet playing i think
