No second wind here. Think instead of pdf.js and how it relieves you of the bloated security hole called Reader. PDF is a large format (extensions include SWF!) but pdf.js need not handle all of it to be useful in minimizing Reader activations.

Similarly, Flash is going down, never to come back (thanks, SJ). So Shumway need handle only the tall head, possibly as a previewer if not a full Flash replacement. The long tail is not too fat, but it will require a plugin for the foreseeable future.

In the far future, archeologists will pore over archive contents at the edge of the Beyond, decoding ancient languages including JS and SWF, leery of evil transcendant malware ;-).

/be