By that logic, Microsoft Windows is open-source, because I can view its source under the MS Reference Source License. This is the key distinction between "Sour

By that logic, Microsoft Windows is open-source, because I can view its source under the MS Reference Source License. This is the key distinction between "Source Available" and "Open Source". Open Source is open. That means I can modify the source and redistribute my changes. If I can't do that, the software is closed source, no matter how much marketing you apply to it.