I’ll happily pay these 30% if it means I get quality services for them:

• high speed download servers
• reliable cloud saves
• automatic, non intrusive updates
• discussion forums
• easy mod management
• friend networking, multiplayer services
• responsive and uncomplicated support

People always act like those are to be taken as granted, but if you have ever worked in dev/devops, you would know that there’s a lot of work maintaining each one of them.

Also, you can use these services for as long as you want, despite paying for them with a single purchase.