I think we are talking about different things. Half your links have nothing to do with Flash or Java Applets (.net, XAML?).

You seem to be talking about new platforms that may derive some part from the old. I'm not saying WebAssembly won't be used for new platforms as that's sort of the whole point of it.

What I'm saying is that WebAssembly won't bring back people making Flash .swfs or writing classes derived from java.applet.Applet in any mainstream way. In that sense Flash and Java Applets are dead. Maybe someone will hack something together that allows you to run them, but that won't bring the developers back to the old platforms.

If Oracle or Adobe announce something, maybe the industry will jump on board, but currently I don't see anything in your list that makes me change my mind about Flash and Java Applets being dead and not coming back.

TeaVM allows any Java application to be ported into WebAssembly, be it an applet or not.

As3-WebAssembly is a compiler for porting Action Script 3, Flash's programming language, into WebAssembly. Already integrated into Flash Develop.

Microsoft and Xamarin efforts to port Mono into WebAssembly, will allow making Silverlight apps again.

You are free to believe this won't turn out into anything, I rather think we will end up in WebAssembly + Canvas/WebGL in a couple of years.

As I said, we are talking about different things. I am talking about running binary executables from old platforms and people making new binaries in the old way again, you seem to be talking about porting old source code to new platforms.

The new platforms may use the old languages, but the runtime libraries are not the same. The new platforms have different APIs and functionalities (no threads in TeaVM for instance).

To simplify my point. ActionScript is just a language. Adobe Flash was much more than that. Maybe companies really will find some compelling reason to start using ActionScript again... but Adobe Flash and it's SWFs will still be dead.