Oh, this research is very much in the interest of the businesses — because staying at home also means spending less money. The idea is that if the taboo around "having fun" — aka spending money — alone is broken, then well… profit! This article of course contributes to these interests.

Personally I think time spent at home is can be as good as time spent out side of home. The article in question does not do any comparative study — it is just assumed that staying at home means not having fun.