You call decade a substantial longevity?
Is this some kind of a joke?
Is your ability to assess being held hostage by js ecosystem expererience?
But seriously - I expect a bit more from platform that could potentially waste my life and my venture. I am still happily supporting some Java (and JSF) code that I have written for clients 15 years ago (don't you just love that sweet support fees that you get mostly for being alive and breathing ?). Meanwhile my friend that build whole company around product written in silverlight almost went bankrupt. Now after few years working in AI (going into it a bit too soon) he is trying to create same product in ... yes you guessed it, Blazor.
Maybe some people do not learn from their mistakes :)?