I think it would be a good idea for ROBLOX to somehow find a way for Chromebooks to be able to run ROBLOX! I'm sure ROBLOX's employee's can find a way!
but on the badside chromebooks do not run programs that are not run by chrome and plus its a 3D program which chromebooks would overload and freeze because of the way they are coded it would be a huge risk to make roblox compatible.