I know what you are saying but my argument is, why do they or we think it needs to be a revolution to be a good game? What Ive seen visually from this VR title, that alone if it was a full fledged sequel would look and feel great for todays standards. The game wouldn't bomb like Duke Nukem Forever simply because DNF when it came out in every single way it was outdated. At the end of the day we fell in love with the franchise because of story, not because of technical advancements. And the story was left unfinished.
Lets say this VR is a step forward they were waiting for....great but nobody asked for a new tech HL, people want a new chapter and a finale to a story. Its great that they can flex their muscles and show off what they are capable of but that is not why people bought HL games in the past.
Look at Shenmue, it was a showcase game when it came out. Now we got Shenmue 3 and it feels like it was made 10 years ago. But actual fans dont care because all they wanted was to continue the story that was left unfinished after Shenmue2.
This is where things divert. Valve doesn't make games to earn money, so consumers wanting to give them money has no real influence over Valve.
Fans want Half life 3, yes; but the people making the games don't want to make half Life 3. And because of that, more than a decade passed before there was finally enough will to finish the game.
You say you don't care about new tech. Well Valve say they don't care about finishing Half life. You simply have different goals. And since Valve is unusual in that they are not beholding to shareholders, they don't really see making Half Life 3 as a priority.
Consumers use money to influence the production of products. But sometimes, money is not enough. To Valve, Half Life needed to be more than just money, and that can be a lot to get used to.