Kinda. I use managed Nextcloud by Hetzner (StorageShare) for ~20 people with their smallest instance (1TB, 4.50 EUR/month) and connected it with a Collabora hosted on the smallest Hetzner VPS (this could use more cores).

If you wanna self-host completly look at https://github.com/nextcloud/all-in-one . I have this running on my NAS for other stuff, but it just works out of the box.

Edit: and it scales. Orgs with a lot more people use it for 10k users or more. And it doesn't need a 100 EUR/month setup, from what I experienced.

Yeah I tested it out with the hetzner app on their smallest dedicated server and it ran fine.

Is storage share the managed service?

They didn't use proper html syntax like <article>, <h2>, etc.; only <div>.

With this it's not possible for the browser to know what is the content of the article.

It's possible, just more difficult. E.g., Safari reader mode works fine for this page.