The reason for this is accreditation standards. Regional accreditation bodies, which are essential for a degree to be widely recognized and accepted, require a certain amount of structured coursework and assessment to ensure the quality and rigor of the education provided. A degree granted purely on prior learning and experience would be difficult, if not impossible, to meet these standards.
Institutions that advertise degrees based solely on experience often lack accreditation or are diploma mills – meaning they are not legitimate and their degrees hold little to no value. Be extremely wary of such institutions.
To get a legitimate degree, you will likely need to complete some coursework, even if you have extensive experience and transfer credits. The amount of coursework required will vary depending on the institution and your prior education.