[uep]

Rockstar is certainly doing well profit-wise in the industry, but I think Valve still compares favorably productivity-wise.

In the last few years, Valve has developed multiple new pieces of hardware with software support; the Steam Controller, Steam Link, and HTC Vive. They've also developed and supported a new platform, SteamOS, and rolled out hardware with manufacturing partners. Besides this, the Steam platform has added live-streaming (like twitch), family sharing, big picture mode, the VR UI, and other features. They were also involved in the development of the graphics API Vulkan, which they need for their Linux-based SteamOS to become a better platform.

These are just what I can think of off the top of my head and don't even explicitly involve any games (though they released a collection of 11 small experiences for VR as well).

[MegaDeKay]

I only wish I could give you multiple upvotes. Valve has been huge for Linux gaming and if I understand correctly, were a major factor in the push for Vulkan. They can indeed Take My Money.