> The statute of limitations is 3 years for copyright infringement
... nope. Not even in the US, where "3 years" as you claim is from the possible discovery date, not the infrigment date (https://www.michaelbest.com/Newsroom/340003/US-Supreme-Court...), and this would probably only accrue when the source code is released (as it can be argued that it would be difficult to see a more subtle copyright infrigment on object code).
Also statutory damages exists, so even for no revenue there is a reasonable possibility that they will be sued for that alone (similar to how game and music piracy lawsuits work).
> and 6 years for patents
Other jurisdictions like Germany (no limits) exists.
... nope. Not even in the US, where "3 years" as you claim is from the possible discovery date, not the infrigment date (https://www.michaelbest.com/Newsroom/340003/US-Supreme-Court...), and this would probably only accrue when the source code is released (as it can be argued that it would be difficult to see a more subtle copyright infrigment on object code).
Also statutory damages exists, so even for no revenue there is a reasonable possibility that they will be sued for that alone (similar to how game and music piracy lawsuits work).
> and 6 years for patents
Other jurisdictions like Germany (no limits) exists.