Flash is absolutely the futre of the web... Flex has been released to increase the platform a bit, but either way they are the same technology, being pushed on a player format that has 98% customer base, mobile platform, etc.
Not only are high end companies using it to leverage their products. Nike.com and others are leveraging it in small doses, but RIA's are on the rise and will soon make the business we do on the Internet more interactive.
If you look at it from a developers side, we can use flash remoting that leverages all the cool things PHP, ASP, and JAVA can do. We leverage ActionScript and the flash player for all the cool things it can do design wise. We aren't talking about just flash, but the fact that IT can interact and use a lot of other web technologies, while the others can't simply digest any services but their own.
Next step, integrate a full 3D engine like shockwave into the ever popular flash player customer base and programmers have unlimited abilities in development in a portable platform...
just my two cents worth.
Josh Jones
www.levelfourstorefront.com