"In another 50 would you expect Apple or Exxon to still be near the top of the list?" Well, maybe it depends on who is supplying power to the world, including,

"In another 50 would you expect Apple or Exxon to still be near the top of the list?" Well, maybe it depends on who is supplying power to the world, including, e.g., supplying the power to run Apple gadgets and Apple datacenters. Chances are it's still going to be Exxon.