Can you legally Charge for data?

My question is, "What changed?"

Why all of a sudden are you telling everyone you going to charge us for data overages?

Clearly this is some massive corporate shift to try and save ISP's from losing money because everyone is switch from TV to things like Netflix, Hulu, and HBO now. With TV becoming a thing of the past and all.

I just don't see how its fare to charge for data, a 1 TB cap is ridiculous considering its 2016 and everyone does everything in the internet. We worry about going over data on our phones, we should have to come home and connect to our WiFi and worry about it too.

My case in point is the Open Internet Act. 

"The Open Internet rules went into effect on June 12, 2015. They are ensuring consumers and businesses have access to a fast, fair, and open Internet.

The new rules apply to both fixed and mobile broadband service. This approach recognizes advances in technology and the growing significance of mobile broadband Internet access in recent years. These rules will protect consumers no matter how they access the Internet, whether on a desktop computer or a mobile device.

Bright Line Rules:

• No Blocking: broadband providers may not block access to legal content, applications, services, or non-harmful devices.
• No Throttling: broadband providers may not impair or degrade lawful Internet traffic on the basis of content, applications, services, or non-harmful devices.
• No Paid Prioritization: broadband providers may not favor some lawful Internet traffic over other lawful traffic in exchange for consideration of any kind—in other words, no "fast lanes." This rule also bans ISPs from prioritizing content and services of their affiliates.

To ensure an open Internet now and in the future, the Open Internet rules also establish a legal standard for other broadband provider practices to ensure that they do not unreasonably interfere with or disadvantage consumers' access to the Internet. The rules build upon existing, strong transparency requirements. They ensure that broadband providers maintain the ability to manage the technical and engineering aspects of their networks. The legal framework used to support these rules also positions the Commission for the first time to be able to address issues that may arise in the exchange of traffic between mass-market broadband providers and other networks and services. "

So how can you limit me to my access. I live in a house hold where internet is used nearly 24/hrs a day and 1TB is not going to cut it. With how much we have to pay already, that's a joke considering you guys cant even deliver  me the internet speed I'm paying for on a regular basis.