Because the installation is a single debacle!
Only one is forced to install this weird "Steam" and to register in a community.
That lasts for ages and only after that you can * try * to install the game itself.
However ... It seems the game is then attempted widget, you really have to know how to disable it.
If you have done this, and the game the game has finally installed apparently this "Steam" can be activated.
For me it was called then "The game is over 6 hours (!!!!) available"
Sorry, not so!
Did everything uninstalled and SEGA written a corresponding mail.
So you have the money indeed not rauwerfen the window.
By the way, that was now my third game of SEGA and all three I was extremely disappointed.
They should stick to consoles, implementations for the PC, they can not namely!