It's true Fido rarely price match plans. However, when comparing the different providers, make sure you're comparing similar services as not all of the providers offer the same services. Some providers can offer cheaper plans because they offer lesser services.
Are Fido plans shareable?
Unfortunately Fido do not offer any shared plans at the moment. You can still add a family member to your account but the data would not be shared.
Does Rogers do price match?
Unfortunately Rogers does NOT price match plans. They only price match device prices. If you want to speak to Rogers about plans and see what they can do, contact Rogers via Live Chat, calling them or @CommunityHelps and they should be able to do something for u.