I think that packing/encryption is important. It prevents casual abuse.
If someone is hacking a wrs file, they are smart enough to know that what they're doing is wrong and some negative motive (not always) could be pushing them.

I think small developers are interested in encryption because their work represents the greatest weight of "company assets." There are no great buildings owned, big bank accounts or massive networks of computers etc.. The code, sound and art represent 100% of the value of the company, and it's intrinsic value to boot. This instrinsic nature adds to the issue. That is, for a startup the value of the code, sound and art could be very valuable or worthless. Most startups hope "valuable," and perhaps it is-- either way encryption is important for somewhat pragmatic reasons.