First what games are you looking at playing?
A really high end gaming laptop will have a 4k screen and a nvidia 1080 gpu in it. If your only looking at playing league of legends. overwatch, counter strike or your not a graphics whore or need a 4k screen. Then spending $1000-1500 would be better since nvidia will probably be releasing there new graphics cards in the spring along with intel releasing new cpu's in the next few weeks/month or so.
And when you get a really high end gaming laptop that cost $2k+ the idea of moving it is really unattractive because they are gigantic (17" screens) And they weigh a ton and the battery lasts for a very short about. Since it uses very power hungry components.