Why IPv6 is not widely used?

Related questions

1. How do I disable IPv6?
2. Why is my IPv6 not detected?
3. Which is better IPv4 or IPv6?
4. Does disabling IPv6 help?
5. Will IPv6 make my Internet faster?
6. How do I enable IPv6 routing?
7. What is the purpose of IPv6?
8. Will IPv6 ever take off?
9. Why is IPv6 necessary?
10. Does anyone actually use IPv6?

Tags

1. #forecasts
2. #strides
3. #billions
4. #consider
5. #cannot
6. #needs
7. #every
8. #enough
9. #internet
10. #things
11. #items
12. #accepted
13. #means
14. #should
15. #needed
16. #connected
17. #address