Is multiplayer a threat to the gaming industry?

[ParaB]

Multiplayer is bad, but stuff like level editors and, heaven forbid -modding tools- are the death of the industry. How can those poor, struggling people at EA&Co sell us their awesome DLCs when stupid people offer gaming content for free?! There should be laws against such... obscenities.

And don't get me started on these poor souls that design games with actually hundreds of hours of gaming content. Without some kind of subscription model! Think about the lost revenue compared to a time-based pay system! Madmen, all of them!