If Lessig was correct when he said that "code is law," I am not sure how anything other than English could be the language of the web. RFCs inform/direct/control the creation of code and RFC Series Format Requirements and Future Development[1] reads:
2.1.2
* The IETF works in ASCII (and English). The Internet research,
design, and development communities function almost entirely in
English. That strongly suggests that an ASCII document can be
properly rendered and read by everyone in the communities and
audiences of interest.
3.3
The official language of the RFC Series is English. ASCII is
required for all text that must be read to understand or
implement the technology described in the RFC. Use of non-
ASCII characters, expressed in a standard Unicode Encoding
Form (such as UTF-8), must receive explicit approval from the
document stream manager and will be allowed after the rules
for the common use cases are defined in the Style Guide.
