At least ~half the 'BigCo is being unreasonable' stories here have another side where the poster was doing something terrible (eg. sharing child porn on their google drive account), and then complaining when their account gets blocked for 'no reason'.

The BigCo can't typically make any comment when this happens - merely say 'we have investigated and decided to uphold the ban', and then they look unreasonable.

Sometimes the unreasonable thing is done by malware on the users computer/phone, so even the user isn't aware, but from BigCo's perspective it all looks the same.

BigCo processes are still opaque, but often the outcomes aren't as unreasonable as they seem.