My isp hasn't changed price upward in 5 years. They have doubled speed and removed download caps during that time. They also cannot change it for another 29months as I locked in a 3yr contract this year.
No yearly increase that I know of. Though they did start charging me 35% more just because I moved from a apartment to a house. No change in connection speed or anything.
I remember my isp introduced a very fast fibre connection
but with a monthly download cap that you would hit in less that 2 hours if you could download a full speed.