Video streaming for the gambler is useless and it may make the device slower than usual which may make you loser. So, we should avoid live streaming but if you have no device to watch the game then you may see the live stream on stake.com or bet365. Many other gambling site also provide video streaming though all the game not published via video live streaming.
I don't see anything useful with video games streaming because I don't see it as that useful since it can not have a good effect on our gambling lifestyle or even bring good gambling strategy. Video gambling streaming is not mostly streamed by most of the gambling platform I know but some do that for the sake of gamblers that needs it for reference purpose or something else.