11 billion people by 2050 will be great for business.
I expect technology to continue to accelerate. Food production to continue to become more efficient. Gas-powered cars to become extinct, being replaced by hydrogen-powered cars. Global expansion by trans-national corporations will put a stronger emphasis on trade and cooperation among nations. I expect the 3rd millenium to be comparatively more peaceful than the world wars of the 1st and 2nd, for the emphasis on cooperation and the decrease of anonymity, through globalized communication. I expect specific ethnicities to die out, as we interbreed, and our children interbreed, a uniform language to become standard, right now perhaps English, although centuries down the road, perhaps Chinese will become dominant, and eventually, with so many trans-national corporations doing inter-country business, a globalized currency to be adopted.
^^ How much of that we will see before 2050, time will tell, but those are the trends where our world is headed. Definitely a great time to be living, and exciting point in the history of our world.