After reading multiple views from people newsletters articles etc some way it was a government planned attack others saying he converted his religion and isis taking credit him being wealthy so why do it etc. Putting it aside here is my view:
A) Money doesn't mean happiness so people bringing up the while hes rich etc is a fairly useless blame point in my view theres no reason to discuss his wealth besides the fact it allowed him to buy up the guns and ammo.
B) This man Bought and carried up 100s of pounds worth of equipment in full view of the public. staff and cctv he then converted TWO windows into snipers nests. Now how the fuck does this not attract the slightest bit of attention its my understanding your not supposed to have high powered rifles in vantage points e.g. hotels etc in america? how hows house keeping not see this or even the desk staff or someone. It amazes me how this guy did not attract the slightest bit of attention especially at a casino where there is a fuck load of cameras and security you aren't able to just fit 14+ rifles into bin bags and carry them up you need to have correct shit to realistically carry that many around not to mention he had no training of any sort so being able to strip and re assemble all them rifles doesn't seem likely.
C) did he act alone? I don't believe so and i think something else is at play here be it a planned attack or something All i know is having a family in military background and private security theres 0% fucking chance to carry this out alone without drawing any attention at all and if he did was it that he bribed threatened or even killed them?