Steam has benefited from a long period of good quality stable leadership, but as Gabe gets older I get more and more concerned for Steam.

I love the service, I've used it since launch alongside Half-Life 2 etc on PC, but I am extremely worried how it looks 15 years after Gabe Newell dies or sells. I would not be shocked to see Microsoft buy them in the end.

There's no public plans for what Valve looks like in the post Gabe-era, and as a privately held company there's not much need to explain/disclose either. I agree its been run great until now, but the future is unclear.