How to get rich:
1) Invent time travel.
2) Travel back to 2011.
3) Buy Sony stock Bitcoin.
After completing your stage 1 and 2 set up bitcoin farm Travel back to present cash in bitcoin buy all the latest farming tech and hold $10billion in cash
Travel back to Nov 2012 buy Sony for $9.7Billion setup farm with your future tech and spend remaining on solar farm rinse and repeat to you own the big 3 plus all the PC Publishers/ stores and console publishers.
Last but not least once you own gaming outright don't come to me to sort out the mess you now own.