I have to believe that Adobe did this on purpose, at least from a marketing standpoint. If they indeed didn't want blogs releasing this as "free" all of these major publications (LIKE FORBES) would not be using that word in the headline.
I think the PR team at Adobe labeled this as free or, at the very least, pitched at reporters that way, and I frankly don't think this is a problem or that they're upset about it.
Anybody can have a blog on Forbes, and it's not Forbes the editorial team publishing them. It's sad that Forbes hinged its brand on the occasional piles of malarky that are published on those blogs, especially since you're using the "It's Forbes!" argument here. Most "Forbes" blogs are around the quality level of Business Insider (read as: pollution).
I often find Forbes blog entries more interesting than the actual magazine articles, though that is, of course, not the same as saying that the blogs are on average any good.
I think the PR team at Adobe labeled this as free or, at the very least, pitched at reporters that way, and I frankly don't think this is a problem or that they're upset about it.