The fathers of the internet are Vinton Cerf and Robert Kahn
Explanation:
Vinton G. Cerf (Vint) was born in 1943 and is an American computer scientist. He researched at Stanford University on packet interconnection protocols and partnered with Robert Kahn in the design and development of the TCP/IP protocol.
Robert E. Kahn was born in 1938 and is an American engineer and computer scientist who worked with Vinton G. Cerf on the development of the TCP/IP protocol which is the crux of the internet today.
Among multiple achievements and awards, they have been awarded the Presidential Medal of Freedom by President Bush in 2005.
if the app developer doesn't meet the clients needs within the app the client may be dissatisfied, and not use the app. The client could also spread the word that this app developer dosen't listen to their customers and this could jeopardize future clients wanting to work with the app developer.