"People are still getting used to the notion that unlimited data plans are dead and gone for their smartphones. The option wasn't even offered for tablets. Now, we're beginning to see the eradication of the unlimited data plan in our broadband lines, such as cable and DSL connections."
My cable company (Optonline) offers unlimited, uncapped, unthrottled bandwidth. That doesn't mean that there aren't periods of contention, but it's not the ISP slowing down the service. We also switched to Republic Wireless, which offers unlimited, uncapped, unthrottled voice, text, and data (yes, even cellular data) for $19/month. They are still in beta, but we've been happy with the service. If your service providers aren't offering these services, switch. If you can't switch in your area, complain to your township, county, and state to bring in competitive services.
The thing is, real unlimited shifts the burden to you, and that's a responsibility that many people can't handle. It's like being on the LAN at the office; if someone is monopolizing the bandwidth, you know it. You (or the admins) will have a chat with them about playing nice. As long as everyone plays nice, you can get the bandwidth you need, when you need it. Throttling comes in when people refuse to play nice, and have to be forced.
Even back in the old landline telephone days when local calls were free, some people would leave the phone off the hook for days / weeks / months. Maximum call lengths had to be instituted as a result. Most people never hit the limit, and never even knew they existed. When people can't play nice, we can't have nice things.