What is the technical reason why streaming is much better than having your own hardware? So far I don't really see it for most people. I could imagine it's bet

What is the technical reason why streaming is much better than having your own hardware? So far I don't really see it for most people. I could imagine it's better for business because you can gate-keep access to your game and nobody can copy it. It's easier and faster to develop because you just have to optimize it for a few datacenters with a limited scope of hardware. (But is hardware support even a big problem today?) For the user they don't have to care for anything. Just click "START" in the browser and you're good to go. Optionally transfer some money for a day pass for premium games. (But is it that easy?) So I think it's supposed to make sense from a business and UX perspective but technically it still falls short. Whoever has enough internet also has enough hardware. Both get cheaper. Whoever develops a game with a big budget could also develop a custom streaming solution.