Just wondering why there is a contract and early termination fee on the Easy plans?

There are no mobile subsidies or extra minutes so why does there need to be an early termination fee?

Also, I understand most add-ons are not available on the Easy plans, but the Broadband lite addon is? Are there any other addons available?

Also, can someone on an Easy plan be part of a VF Family? Not the owner, just a member? And i guess you can't addon bestmates?