Can't ignore the usage rates, too. How many Mac users keep regular backups by separately buying/setting up/maintaining extra equipment vs. how many iPhone/iPad

Can't ignore the usage rates, too. How many Mac users keep regular backups by separately buying/setting up/maintaining extra equipment vs. how many iPhone/iPad users keep regular backups by opting into iCloud Backup at the prompt during setup? I don't have statistics on it but it seems very likely that the latter model gets hugely more uptake.