I've had dsl from the beginning when the fastest they offered here was 1 megabit down / 384k up.
few years went by and they upgraded to adsl2plus offering 3 tiers
3 megabit down / 768k up
6 megabit down / 768k up
12 megabit down / 1 megabit up
unlimited of course. And for the power users you could order a 2nd 'naked dsl' line and with your own or buy or rent from isp you could get bonded bringing the max to 24 megabit down / 2 megabit up.
it sat like that for about 5 years. We have comcast locally and every month a new doorknob flyer hung from my front door advertising comcast.
The doorknob ad was a direct attack to the telco, and it even claimed "Unlimited data" then a tiny asterisk by Unlimited. haha!
Now my provider has rolled out VDSL2plus. The new 3 tiered service is on 1 single line.
25 megabit down / 5 megabit up
50 megabit down / 10 megabit up
100 megabit down / 25 megabit up
and the nice thing the prices are only $3 higher than the 3 tiers in dsl2plus was.
We also get free newsgroups access with account. Which most cable isp's stopped doing that long ago. Back when I worked netops dept at a dialup isp in 1998 to early 2000's when we got our CLEC and moved to DSL service. We also offered free newsgroup access, back then we used Giganews of course but we ran a local caching server for them also to help cut costs.
So far in all these years my provider keeps swearing they'll never add caps. I know it could happen, anything is possible.
I was on 12 megabit for 5 years and my monthly usage across my lan, which is setup a little funky, but it's dsl modem-> linux box that is my router, runs nat/firewall/upnp support/etc, then off the switch I have a wireless access point for tablet/laptop.
between all my devices I average 380-418 gigabytes per month when i was on 12 megabit.
I'm on 50 megabit vdsl2+, I just barely qualify for 100 megabit range, but I just went with 50 as it's more than enough for just me, and i didn't want to add another 25 bucks to bill just now.
since upgrading to vdsl2+ 50 megabit dn / 10 up, my useage did go up a little Im now averaging 402-460 gigabytes/month total useage
that's gaming pc, fileserver i tossed all old and new hard drives in so it's got 6 internal hard drives, 3 external usb hdd's and 1 esata external hdd so about 10-12TB storage "overkill" but i just tossed everything i had into the fileserver box. It runs rtorrent/rutorrent web front end to control from any device on lan.
drives shared to stream to any device on lan.
then the other linux box which is pretty much used as just a router. built using a mini case, it also auto downloads ad block lists so ads are blocked at my router, therefore blocked across all devices on lan.
So my traffic is mainly netflix, torrents, and gaming. occasional video chat/voip/random junk.
Still today they stay unlimited. They even offer bonded vdsl2+ so if you can qualify for 100 megabit well you can get 200 megabit bonded vdsl2+
but they are testing 2 gigabit to home services in 1 market up north. Dunno which one will win, but
G.Fast uses copper like DSL. They don't have to run fiber to the house but for 1 gigabit speed the distance is 100 meters or less to the fiber.
G.Fast is still being "researched/tested"
the other option of course is like Fios.
It will probably be 5-8 more years before gigabit comes to town here. If they stick to their "promises".
Most non AT&T DSL services are unlimited though.
seems only cellular and cable internet use caps.
seriously if ya want unlimited DSL see if your town has VDSL2+ from the Telco. It's solid as a rock and very low ping times. I get 8ms pings to google.com
and I love free newsgroup access :P