Which of these is NOT a typical step in the evolution of service delivery models in the manufacturing sector? Later in an industry's evolution, third-party service provides appear and take some service business away from distributors and dealers. Manufacturers usually start by providing all maintenance and repair services themselves. At some point, customers become skilled enough that the industry stops offering ancillary services. Over time, manufacturers begin to shift some maintenance and repair services to dealers. Over time, manufacturers begin to shift some maintenance and repair services to authorized distributors