LHA was released as freeware and included some source code to help with porting, whereas PKZip was released as shareware and as the article mentions, it's hard

LHA was released as freeware and included some source code to help with porting, whereas PKZip was released as shareware and as the article mentions, it's hard to find actual implementation details around i.e. it was probably easier/cheaper/smarter to go with LHA. https://en.wikipedia.org/wiki/LHA_(file_format) https://en.wikipedia.org/wiki/LHA_(file_format)