Conclusion
We saw that web accessibility is a difficult concept to understand and is often misunderstood. Indeed, the distorted idea of the concept, an in some extend of the web standards, conveyed by some people whose the Web is their job have created numerous myths that are difficult to demystify. The concept of web accessibility is even sometimes seen as a step backward.
We also saw that web accessibility is difficult to implement fully for every kind of disabilities or difficulties that could prevent one user to access the content of a website. Indeed, the different natures of all these difficulties and the specific needs they imply are too vast to be answered all; the idea of answering them all would be a utopia: because it is impossible to list each and every difficulties encountered; because it is impossible to understand each and every disability when not being affected by them; and because, sometimes, a solution answering a particular problem may be a problem for someone else.
We also saw that even if one person can witness that by using some more accessible techniques of implementation a website will indeed be more accessible, it is very difficult, and sometimes impossible, to evaluate the benefice brought by the establishment of a web accessibility policy. Indeed, even if there are statistics that evaluates the percentage of disabled persons in a country or in the world; even if there are statistics that evaluates the percentage of people who have access to the Internet, there are no statistics that tells how many disabled persons uses the web. And even if we know this number, it would not tell us to how many person profit the web accessibility policy, as even person who have no particular disability can benefit from it.
Finally, we also saw that establishing a policy for web accessibility is not an easy choice to make; indeed, such a policy will involves compromises with other important matters such as security, advertisement, and even web accessibility itself.