Why paid parallels desktop if the virtual box works decently and has a native familiar interface?

Question

virtual box

The essence of the question is this: why pay for parallels desktop if the virtual box works decently and has a native familiar interface?

Answer 1

in parallels, everything seems to be native, all applications from the virtual machine are launched without the desktop of the virtual machine, that is, the feeling is as if these are Mac programs and the file association works