TTRPG lines have made a decided shift toward fewer releases. I think Paizo is the only company still doing monthly, physical releases for a game line. There are a bunch of reasons for this:
- [Lots of good stuff]...
- When planning for the 5e product line, we found that people wanted about 1 new product per year. The monthly release schedule was choking the game line to death. People who bought everything were playing a game that looked completely alien to people who bought just the core rulebook. 3.5 had entire action categories that were standard in books released after a certain point, but the rules for them weren't in the PHB.
I have long thought that this was partially related to changes in Hasbro management from the top down. At the corporate level, they had a notable shift from manufacturing being a core business to brand management being their primary goal. I want to say the biggest announcements about this were 2015ish - sometime around the start of 5e, although the seeds were probably in place far ahead of that. I was always under the impression that a longer product life cycle was part of that focus on brand management.
Can you speak to any of the corporate changes towards brand management being a factor in the switch to fewer releases and/or a longer product life cycle for D&D? It certainly seems like a very different take on product management from the earlier WotC announcements about 3.5e being planned relatively quickly after 3.0's release.