[unnamed]

Why would you use Darckomet 5.4 instead of Teamviewer or a well-known product?

Because Teamviewer and darkcomet are two entirely different beasts, teamviewer is for remote desktop sharing whereas the computer you are attempting to access needs to ask permission for your machine to connect to it, darkcomet and other RATS (remote administration tools) work covertly and the user should have no idea you are inside their system

Darkcomet versions prior 5.4 work that way.
5.4 works just as TV, it needs permission by the user.