Some people believe only copyleft licenses are open source. They're right on principle, wrong in (legal) practice.
They're not even right on principle: https://www.gnu.org/licenses/license-list.html
Even the FSF recognizes that non-copyleft licenses still follow the Freedoms, and therefore are still Free Software.
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They're not even right on principle: https://www.gnu.org/licenses/license-list.html
Even the FSF recognizes that non-copyleft licenses still follow the Freedoms, and therefore are still Free Software.