You pay the same price but get 1/6 of what you used to get.
This will happen in other countries too. Service providers regret giving 12GB. If the public does not protest, then they will reduce drastically.
Why?
Because they can do this to you. And get away with it.
Soon that meager 2 GB limit will become the norm and (they hope) people will get used to it.
They insist that most people will not notice the difference. They insist that most people don't use up to 12 GB volume anyway.
There is a fallacy in this argument.
If this argument is TRUE, and most people don't actually use that much volume, then they can INCREASE the limit to 30GB instead of reduce it to 2 GB.
In addition, if you sold me something, say for example 10 kg of rice for $30. After the purchase, it is up to me whether to eat 1 kg of rice per month or 10 kg per month.
After you sold the rice to me for $30, it is none of your business, how much rice I actually eat.
You should not use the reason that since I only eat so little rice per month, your new price for rice is $30 for 1 kg. (instead of 10 kg that I used to get for this price). This is an obnoxious explanation for profiteering.