Context: Like it or not , this represents a niche market . Unless they have a master plan , like pushing it to all the IE users with Google Desktop and Toolbar installed , I wonder how they will take share from IE without cannibalizing Firefox , in which Google is heavily invested . Most computer users do n't like change , which is why IE6 manages to have 25 % of the market past its eighth birthday .

Question: What can disturb the internet browser market ?
Options:
0. IE6 has another birthday
1. Computer users changing their preferences
2. None of the above choices .
3. If firefox is installed
Answer: 1