In the private sector you can choose your patrons and your dissemination mechanism. Many, many scientists publish papers, publish code, give talks, write blogs, and otherwise distribute technical details about their work product.
In academia the Federal Government is your only serious patron and you must disseminate in academic journals/conferences, which generally do a piss poor job of providing incentives for either doing good work or communicating well about that work.
Any time I hire a junior PhD I have to UNDO a ton of academic writing/provlem-solving propaganda and reteach both common sense and normal writing style.
The harsh truth is that private sector scientists tend to do better science and disseminate it in more useful and lasting ways. They are paid better for it.
The academic scientists who are up to private sector standards tend to have diverse funding mechanisms and therefore rely far less heavily on prestige publication for their labs revenue stream. But most professors must publish papers because they are unable to do good work and/or communicate the value of that work to anyone other than their inner circle of friends (who sit on the grant review panels or take stints at federal agencies).
