Both historically and currently people who own/owned football clubs are not generally football experts, they are overwhelmingly successful business man who acquire football clubs as a luxury item like they would a Ferrari or , indeed , a luxury yacht.
Many businessmen buy businesses they know little about. If they buy a steelworks for instance they don’t need to know the intricacies of the Bessemer converter they leave that to the experts they employ. What they bring is their understanding of how to make a business profitable, it’s the financial possibilities that attract them along with the prestige of owning a football club.
People like Jack Walker who combined both disciplines are the exception to the rule.