It would be great for information quality on the internet if communities were ran by people who were passionate about the topic instead of primarily money-motivated. The internet abhors an information vacuum.
I think the problem is that a lot of these communities
were run originally by owners who wanted a good place for discussion. But like many owners, they grew weary of dealing with problem members, paying for and maintaining hosting, or any number of other reasons just got tired of owning a forum. And the only way out for them, beside shutting it down, is to sell it. Most (or maybe even
all) members wouldn't have the means to do so, either monetarily or technically. If the money is good, the owner is going to sell. And the new owners will buy it
only to monetize it. That's happened with many forums I used to visit.
However, I have seen VS try to start up their own communities, and they are poorly attended. For instance, if an automotive manufacturer announces a new model, they will immediately register a domain name and create a new forum, even if it sits empty for a year or two. It gets
some traffic, but it's not the same kind of atmosphere.
Some companies and corporations install forums for support. So having their brand on it doesn't make it ripe for selling off to a holding company--that puts a branded property of theirs out of their control. In that case, though, if a company finds it's too much work to maintain the forum, they simply shut it down.
In any case, it was more the perception to the average user in this case. They saw it as having put their content onto a forum owned by one of their peers, only to have it sold to a large corporation who wanted to use their content and their data to generate ad revenue. This particular forum community noped out really quick.
I hope that more communities do the same in the future--if their "home" gets sold, there's no reason not to build a new one, and quickly. They didn't sign on to join a corporate-owned forum and become a product. They just wanted a friendly place to discuss their niche interests among friends.