[sowbug]

Some products are so good they don't need marketing. Some marketing is so good the product doesn't matter. But most of the time you need both.

Even https://en.wikipedia.org/wiki/Ignaz_Semmelweis had a great product (idea): if doctors wash their hands, fewer of their patients will die. But his marketing (personality) was off-putting, and his ideas weren't accepted until after his death.