A man worked 20 years for an oil refinery, on his 20th year he came to the boss with an ingenious plan he cooked up in a day that saved the company $1.2B in lost expenditure. That same year he lost his job & with escalating debts, he was in a mind state, that he poisoned his wife, carbon monoxide his children & shot himself.
If he had bothered to calm down, he could of probably proved it was his idea that saved the company or if he had waited, he may have had another great idea.
I believe he expected this idea he shared, he would receive a raise / a promotion or some financial reward, but it didn't. So he was in a rut, believing he was owed.
The saddest thing is that it happened.
Have you ever seen a Kickstarter / Indiegogo campaign where they share the Hardware & Software , while the campaign is running?
There is more than one open source licensing scheme.
You may license your designs and software to be freely shared, but not freely modified & speculate in your agreement that your product are only for individuals & not for mass reproduction / sale.
Expectations
What any artist expects, is not necessarily what they will receive.