Gasp! I've been threatening to do this for years, decades even, but π€·ββοΈ
Today I did it. Changed ISPs. It was really easy, despite having to ring #internode to cancel (it's not automagic). I didn't even need to change modem settings!
Back in the day they had heaps of extras, & lower costs, but as ISPs merged, extras got dropped, prices went up. No reason for loyalty. The most recent price rise made them expensive - they wanted more for 50/20 than I'm now paying #Spintel for 100/20.