(1) TOS for his home connection may forbid offering services. (Yes, he could pay more but ....) (2) the hassle of running a server. (3) he may not have much

(1) TOS for his home connection may forbid offering services. (Yes, he could pay more but ....) (2) the hassle of running a server. (3) he may not have much upload bandwidth, which translates to slow downloads by other people.