If you meant something else by "the honeymoon x265" (e.g., a specific tool, malware sample, or encoding setting), please clarify, and I can refine the answer.
The rates were significantly higher than H.264. For tech giants like Google (YouTube), Mozilla (Firefox), and Apple, this was a nightmare. It wasn't just the cost; it was the uncertainty. You couldn't be sure you had licensed all necessary patents. the honeymoon x265