Why we need to pay money for Nokia's Meego to start everything again from the beginning such as app, support and service etc since I don't think Meego will be able to reuse all existing Maemo's app and service.

As you may not get anything good from first Meego device and need to suffer the bad support for it from Nokia as you will not get Meego 2 upgrade after you had paid money for Nokia's first Meego device experiment .