But isn't software like Photoshop actually a licence to use it, rather than a sale of a product?
I'm not an expert in the field either, but it'd be interesting to find out.
An example from Adobe's website:
"Adobe products are not sold; rather, copies of Adobe products, including Macromedia branded products, are licensed all the way through the distribution channel to the end user. "
Found it:
10. Governing Law.
If you are a consumer who uses the Software for only personal non-business purposes, then this agreement
will be governed by the laws of the jurisdiction in which you purchased the license to use the Software.
[edit]
If
you are not such a consumer, this agreement will be governed by and construed in accordance with the
substantive laws in force in: (a) the State of California, if a license to the Software is obtained when you are
in the United States, Canada, or Mexico; or (b) Japan, if a license to the Software is obtained when you are
in Japan, China, Korea, or other Southeast Asian country where all official languages are written in either
an ideographic script (e.g., Hanzi, Kanji, or Hanja),and/or other script based upon or similar in structure to
an ideographic script, such as hangul or kana; or (c) England, if a license to the Software is obtained when
you are in any jurisdiction not described above.