I want to know the answer to the following question:
What do visps purchase services from?
All the background I'm provided with is that "A virtual ISP (VISP) is an operation that purchases services from another ISP, sometimes called a wholesale ISP in this context, which allow the VISP's customers to access the Internet using services and infrastructure owned and operated by the wholesale ISP.". Is that enough to answer the question?
Answer: yes