I'm also presuming peacock. I'd say over the last two decades, the sport has really pushed to build staying power into almost all aspects. Rules, schedules, broadcasting etc. Frequent changes make it difficult to build strong fanbases. Having said that, money talks.
The imsa category isn't currently showing in the sports section like Indy car does, and it also appears the petit replays are no longer there. Most of the section is highlights from only half the 2023 season.
The imsa page shows the Rolex races as streaming on peacock:
https://www.imsa.com/events/2024-rolex-24-at-daytona/