The amount of continuous bandwidth required by twitch is way, way bigger than steam needs. Steams concurrent users are not using the download bandwidth, they are playing their already downloaded games whereas twitch’s users are continuously taking from it. Furthermore, twitch is free to access whereas steam users when they download something they usually already paid for it, so the efficiency model to be considered is again, different.

I’m sorry to say that you really don’t know about the technicalities enough to determine if they are similar scale companies. And if you do, you are being intentionally wrong which I don’t think is the case.