my dream of an IOI reunion feels like it's slipping away

I think while many fans hoped the group could reunite professionally, the business realities are that getting more than a half dozen companies and 11 artists schedules aligned is a near impossible feat. The companies that have successful artists aren't terribly interested in accommodating other companies and passing on revenue generating activities for their own artist. If anyone has ever tried to schedule a camping trip with 11 different friends who all work, one would be aware of how hard it is to even find one weekend that they can all get together let alone several weeks. It's hard enough for the former members to even get together for an evening socially as all eleven. Honestly, this likely wouldn't have even been possible if some of the post-IOI groups weren't under-performing and as a result their companies were more amenable to the potential windfall from a reunion single and the possible publicity bump for the members, or those members didn't have busy schedules because their companies weren't promoting them or they weren't in much demand from broadcasters or advertisers. Since this appears to be falling apart, it might be quite a while before an attempt is made again. Some of the companies won't want to bother trying and even some of the members might be frustrated with the process and not want to get their hopes up again.