It feels like Anthropic was affected by resource limitations upon launch or big adoption curves in the past, and now they're tyring to be mindful of having less of those, in several ways, one of which is trying to keep capacity to keep core services running and let the high demand not impact the rest of the system.
WHen it doesn't turn out that way, it opens up options.
At the same time if other model providers were anticipating Anthropic or someone else to have problems at launch, and were waiting in the wings with their own models to launch competitively, it sets off a capacity release competition.
One might lower prices, one might give it away, or just make it available, and then there are users on other platforms with limits, or free until a certain day, etc.