You are right about rate limited internet. Something else to consider is renting some rack space is super cheap and can come with free internet and electricity. Last time I checked a few years ago in DFW it was $60 a month with 1Gb/s and some IP addresses for 1RU.

Many small and medium businesses have a "business" ISP circuit. This typically doesn't have caps and has the option of a dedicated IP. Speaking from experience I was an ISP network engineer for a big telco years ago.