gamesas has bought the rights to fallout serie, and there may be only one reason for that: gamesas wanted to make a sequel or prequel to this game.
So, it has to be at least in same world setting.
Right?
From first fallouts we take that fallout starts in our world, but with exception of nuklear war, and that is where changes start.
So, all the lasers and robots were not available before war, maybe to some secret bases but not to public!
That idea is pushed by first two games, however in fallout 3 we learn that there is a robco company that created robots for public use before war, wtf?
And now in fallout 4 you even have a robots at home, that look like totaly different world setting.
So, why buying rights to fallout, if you wanted to make a different game anyway?