I learnt that if the service provided is of non-rival and non-excludable in nature, the problem of free riding occurs and the provider may not get a profit. I can understand how non-excludability results in free riding but I couldn't uderstand the effect of
non-rivalry. In the book I read, street performance was cited as an example for non-rival and non-excludable service. The following is an excerpt from the book 'Day to day economics' by Satish Y. Deodhar
at a given market price, the relative buying power of different consumers might exclude some of them from buying the car or the toothpaste. In the case of the street-performing couple, this ‘excludability’ feature is missing, because they cannot prevent individuals—either physically or by charging an appropriate price—from viewing the performance. Thus, due to the non-rivalry and the non-excludability of the service which they provide, the problem of free riding occurs, and the market fails to deliver—ergo, the street performers cannot run a profitable business.
Is there any service that is rival and non-excludable? If so, how is it different from the previous case with regard to free riding?