Why might vertical systems be a business ethics issue? ?
a. ? they threaten the existence of large multinational corporations.
b. ? they can increase consumerism and planned obsolescence.
c. ? they can result in a channel member having too much control.
d. ? they cut out the need for retailers and wholesalers.
e. ? they can result in lower wages for factory workers?

The answer to the question above is option C: they can result in a channel member having too much control. Firstly, we define what vertical system is. From the term itself vertical, the formation of the members is from top to bottom. Therefore, this includes the producer, wholesaler, and retailer and this is where the distribution channel occurs. The reason why this kind of system is a business ethic issue is due to channel members that might have too much control because of their positions and unequal distribution of tasks. 

They are enjoying the advantage of independence while running their own small business. they can go where they want when they want to, because they control the restaurant's hours. they can also make time for life emergencies, and set the hours to be when they do the best cooking.