Consequences of fragmentation 
- Inhibits free movement of services between countries.
- Web builders have to learn new rules for each country.
- Users become confused by differing standards.
- Meaning is changed:
- Changing the wording of individual provisions;
- Combining two or more different accessibility provisions;
- Omitting or adding accessibility provisions.
- Authoring and evaluation tools and browsers can't keep up, can't be sold in different countries.
- Knowledge and expertise is fragmented.
- Increased costs of ensuring accessibility by web site owners. Owners give up hope.
