there used to be a lot more shared hosting in the world when Slashdot ruled the geek news roost
it'd be fine if it's one site on a dedicated machine, but these shared webhosts would routinely cram 500-1000 hosting accounts onto something like a single-core, HT-less 2.4GHz Pentium 4 with two gigs of RAM, running mpm_prefork on Apache 2.0, with single-node MySQL 5.x (maybe even 4.x!) on the same box... which was not terribly efficient as others observed
you carry about 20x the compute power of that machine in your pocket, even a Raspberry Pi 4 could triple the workload
it'd be fine if it's one site on a dedicated machine, but these shared webhosts would routinely cram 500-1000 hosting accounts onto something like a single-core, HT-less 2.4GHz Pentium 4 with two gigs of RAM, running mpm_prefork on Apache 2.0, with single-node MySQL 5.x (maybe even 4.x!) on the same box... which was not terribly efficient as others observed
you carry about 20x the compute power of that machine in your pocket, even a Raspberry Pi 4 could triple the workload