We worked with a large EU firm with multiple offices in every EU country (and a few outside in larger Europe); their headoffice had a bespoke CMS made for them; a huge monster of a thing that was very costly.. The goal of the head office in doing that was to make sure there is consistent branding and design across all the company in all the countries. This inability to not 'stand out' as a company annoyed the branches so much that they all use wp or pagebuilders for the site; cheaper, faster, customisable etc. The cms is only used in the originating country. No-one ones this uniformity that management wants.
Also extreme I guess, but we did a lot of sites for companies where a single company has > 1000 sites (branch, departmental, intranets etc); the head office always starts with 'this is great, we want a cms that has a few templates and we don't want anyone to steer away from that', only to have the complete opposite a year later. We gave up telling them upfront a long time ago as it made us lose the pitch (seems we don't trust our product), but we have 0 companies in the past 20 years that stuck with 'uniformity / brand recognition' lark across the board. With or without page builders.
What I do not like is the waste of content; even when you use custom stuff (wp or what not), you can still make sure the content is stored in json/markdown or something in a central cms.
