Yes and no. It’s both electromagnetic waves but the frequencies are very very far apart. So far, the techniques we use to emit and receive them are fundamentally different. Their propagation and transmission characteristics are also very different. Also, the data transmission rate (in theory) only depends on the bandwidth of the transmission channel, not the absolute frequency. But there’s more “room” for large bands at higher frequencies, of course.
I’m okay with steam because:
The Blizzard launcher is just for the few games Blizzard is selling. It asked me to go online way too often. Maybe every single time, I don’t remember exactly. It’s a bit like that Rockstar launcher. I don’t see any value in it besides auto updates.