It's interesting to me because when something involves free software being used in un-intended ways, many here in the HN community have no problem describing it as theft. However, when it involves copyright violation, there are huge arguments about word usage.
This is just a tactic to make theft more acceptable. When you use nice words like "copyright infringement", people don't associate negativity with it and over time, people don't have a problem with it.
Over the course of the last 10 years, it seems to have worked. It's sad that many from the open source community have to be so hypocritical.
Also,
Identity theft is still called theft, even though your identity is not actually stolen.
Identities are supposed to be unique, its part of the whole idea of identity. If someone else is using your identity, you are being deprived that. So in that case, yes, it is analogous to someone actually taking something physical to you. You cannot fully use your identity once someone else starts using it.
Of course you can.
HTC steals from me every time the USB cable doesn't dock securely in the port.
Microsoft steals from me every time Windows crashes.
All of those steal time or money from a person who hasn't agreed to it.
It's not about stealing a physical object or not.
It's about doing something with someone's work (his program) without respecting his wishes (to be paid before you use it).
When you plagiarize a poem as your own the original still exists. But it's still stealing.