Intellectual property rights don't make a company. Properties will often be safe because when a company goes bankrupt they can just sell them off to whoever, though that's not always the case. Atari, Inc. (the company going down) was responsible for actually publishing games, which means, in some cases, funding the development process and support. Infogrames might not want to take that up with the same developers (such as Obsidian). And I doubt they really have the obligation to.
This could mean a few things. What seems most apparent is that it may mean that support for Neverwinter Nights 2 ends up the responsibility of Infogrames as they have the rights to develop Hasbro (consequently Wizards of the Coast and D&D) properties up until 2015. If such a case, they may do things differently than Atari. As fans of Neverwinter Nights 2, this may or may not have noticeable effects on us. It may also result in any project Obsidian has currently with Atari, Inc. to be shut down. This probably wouldn't be immediately noticeable to us, but may be bad for Obsidian as it means one source of future revenue is gone. Again, this is only a possibility.
Not "pointless," and as a layman I can only speculate as to the ultimate consequences of it with little accuracy, but there seem to be possibilities both bad and neutral.