And I thought it was just me.
Not at all.
All major players have spun up something that they have claimed will be "The next big thing, honest" and it's gone nowhere.
I think MS is the one that was most willing to do so simply to destroy a competitor and preserve it's not-a-monopoly-other-OS's-are-available market.
Some will rise, some will rise as the preferred way to access the environment that drove their creation (EG Android today, SAP or Oracle yesterday) and some will curl up in a ball in the corner and die. Maybe the implementation of their ideas was rubbish, maybe the ideas were just not that big an advance over what you can get already, maybe they were but the learning curve was just too big to go there for the benefits (the old HP calculator story. RPN is great if you were prepared to swallow the learning curve, and many weren't).