I think this part nails it: "Any new product they could introduce would be likely to cannibalize their existing products. After all, one reason for a man to want to use a reversible contraceptive is so his partner can stop taking the pill." Little economical incentive to cannibalize its own market. That makes so much more sense than conspiracy theories preventing this from happening. I disregard real "scientific barr…
I doubt that's actually true for most use cases, though. I think for most people it offers security for the male only. People always want to keep their own sexual health under their own control. I would be hesitant to say that most sex happens in relationships between two long-term exclusive partners. Therefore, there would be many people still interested in taking the daily pill or other birth control options for th…
I'm not sure that would be the main reason. If you're concerned about security, pills/vasalgel/anything except condoms won't really save you from the worst consequences. Only a barrier method can be completely effective (and even that fails).