Flash isn't any sort of standard except in the limited sense that it is used on a lot of web sites. It's a proprietary, closed source plugin and application; the precise opposite of a standard. This so-called "standard" exists solely at the whim of one company, Adobe, and they can do whatever they wish with it without regard to its users or anyone else. For instance, they dropped Linux support a few years ago without any input from the community.
In my opinion, Flash is an abomination that can't die soon enough. The same goes for Microsoft's Silverlight.