At the end of 2011, Microsoft’s® operating systems (e. g., Windows®) were on more than 90% of the world’s computers. As a consumer, do you think this is a good thing?

Absolute monopoly is usually never a good thing because consumers don't have options and if systems are faulty or pricey, there's nothing else to turn to. However, in the absence of other Operating systems, which could compete with Microsoft, it is only fair that Microsoft held monopoly in the market. When other companies came out with their versions albeit late, they were not compatible with most existing hardware, as well as software.

Hence people chose to stick on with Microsoft. Microsoft was quick in innovating and making use of opportunities that came its way, leaving competitors far behind.

Explanation:

b)

it created free trade throughout the colonial territories.

the answer is a) high entry costs