> What's a crime is that it can stay commercial. Source code should enter public domain in a decade at most.

In many cases, people are free to write their own implementation. Your claim "Source code should enter public domain in a decade at most." means that every software vendor shall be obliged after some time to hand out their source code, which is something very strong to ask for.

What is the true crime are the laws that in some cases make such an own implementation illegal (software patents, probitions of reverse-engineering, ...).

Not everyone buys into FOSS religion, especially when there are bills to pay, and too many people feeling entitled to leech on work of others and being paid themselves, or companies for that matter.