DE truly are impressive in how utterly not greedy they are. Not to mention that, as you've said, Warframe really seems to be a passion project for them and it shows in every single detail - especially the Warframes themselves, every model is a display-worthy sculpture, I swear!

And, yeah, they are perfectly attuned to the community, actively participate not only within said community, but also mobilise people toward helping other noble causes (see the explosive success they've had with fundraising for the Princess Margaret Cancer Foundation)!

And I totally understand what you mean about the almost paralysing amount of choices on offer in the game itself, I have 2.5k hours in it, playing relatively regularly for 5 years now, and they thoroughly hooked me in with their last batches of updates! Again! I have to consciously make myself play other games every now and again just so that I won't burn myself out!