Valve on Alyx and the Future of Half-Life

Gabe Newell Opens Up About Valve's Past, Present, and (Unexpected) Future on IGN is a video interview with the Valve boss who is joined by Robin Walker to discuss Valve, the Half-Life series, and in particular the imminent Half-Life: Alyx. For his part, when asked about the future Robin says "I definitely want to make more Half-Life... I think we're about as tooled up for this as we have been for a long time." At one point Gabe is asked what's the closest we've ever come, besides Alyx, to actually getting Half-Life 3. He doesn't really look back as requested, and where he takes his answer implies that success with Half-Life: Alyx will have a bearing on where the series will go from here:
"It's part of a progression, right? I mean for us it really is about... Half-Life games are supposed to solve interesting problems and, Alyx represents the collection of interesting problems and the solutions that we can use. The big gap is because, maybe we are stupid, but it didn’t seem like there was an obvious… like we don’t just crank Half-Life titles out because it helps us make the quarterly numbers. We deliberately avoid imposing that constraint on how we approach stuff. And we could be right and we could be wrong. We make mistakes and, you know, we did Steam Machines. We did Artifact was a giant disappointment. We screw things up."

"And so for us... this is actually a really powerful moment for us. Because this is as good as we get, Alyx. And we want to know, we want to find out, like, are we on the right track? We want people to come back and say 'Oh my God, the magic still is there. These guys at Valve can take this kind of experience and build something that opens our eyes.' As designers that thrills us. As players the reviewers look at and say: 'No this is legit.' And if it is not, then that’s also going to be super-powerful and super-useful for us. I think we’ve nailed it. But, for us, we've gnawed on this thing for a long time. It's time for it to go out into the real world... it's like you're sending your kid off to college. Let's see what happens! That, for us, is incredibly important, and part of our development. How everybody reacts to this is going to tell us what the next generation of changes and improvements we're going to make. Unfortunately, failure is more educational than success... I'm going for a little non-education this time around."