One issue that CLAs solve is the problem of copyright termination after the death of the author; see (https://www.law.cornell.edu/uscode/text/17/203 https://www

One issue that CLAs solve is the problem of copyright termination after the death of the author; see (https://www.law.cornell.edu/uscode/text/17/203 https://www.law.cornell.edu/uscode/text/17/203). DannyBee is an open source lawyer, his comment (https://news.ycombinator.com/item?id=18148727 https://news.ycombinator.com/item?id=18148727) gives some other advantages of CLAs.