> same comcast plan as I signed up for in 2012 (80/5 for $78/mo total with modem rental then)
> Only now I pay $106/mo (w/modem rental).
The price you're paying today has merely tracked nominal inflation relative to the price you were paying 12 years ago[1].
[1] https://data.bls.gov/cgi-bin/cpicalc.pl?cost1=78&year1=20120...