You never answered my question so I'm just going to go ahead and assume no amount of evidence will change your mind.
Actually, I very precisely answered your question. I said it would take some evidence proving a correlation between the slow release schedule and 5e's success. It takes more than simply stating "5e has good sales so the slow release schedule must be why". Your assumption that no amount of evidence would convince me is a cop-out for not being to answer my response.
Again, I am not even arguing whether or not 5e is a success, or more successful than previous editions, just that the slow release schedule has less to do with it than other factors. And if the slow release schedule is not the deciding factor, then WotC would do even better if they released a moderate amount of material instead of a minimal amount.