Ok, now I see what your saying, but its pretty unlikely to happen:
That would require precious development time they don't really have to spare atm. Since I'm guessing there is no easy "Convert to Flash" button for Video games, they would need to test it, change it, do all sorts of unfun stuff that would cost time, which = $$ which = not a smart move. Especially since they would gain no $$ off the demo. Sure, it might bring in customers, but I think your better off just putting an Advertisement on the site. A lot less hassle.
Its falsely advertising that Tidalis is a flash game. Yes, this is an issue because there are plenty of idiots on the internet who don't read. You could scream in their ear that the full version of Tidalis doesn't exist in flash mode and they will still complain about it. Personally, I'd avoid this.
And sure, a site that gets millions of hits would be great for a demo, I think your just way better off linking the actual demo of Tidalis on that site. And that's of course if people realize its there amongst all the other flash games available.
So I guess what I'm trying to say, putting up advertisements is a lot easier than putting up a demo of a game that doesn't work on flash.
King