Question

An sbu that generates more cash than it needs to maintain its market share is called

Answer 1

The answer of your question is "Cash Cow"
An SBU (Strategic business unit) which generates more cash than it needs to maintain  it's market share is called  Cash Cow  
The cash cow means the company or business unit is mature and provide the constant cash flow. This simply means the business unit is now having the more money  with positive cash flows.Such business generally have the big market shares .

Hope this will helps you.

Answer 2

The answer is cash cow.

A business unit that usually generates more than its needs to maintain its market share is called a cash cow in a portfolio matrix. A cash cow business or investment offers a steady income or profit over its life span. The profit generated is much more than the cash spent to start the business.