I’d say it depends on the position, really.
If you’re going for a seat on the board I’d expect you to know quite a lot about the company’s financial position. If you’re going for a job as a cleaner, not so much.
For a regular pay-grade job I’d expect that someone going for a job at a widget-makers would know that the they made widgets, beyond that I’d expect them to know only what’s really relevant to the role.
Companies (and those interviewing for them) like to be bigged up though, so if they’re the world leader in widgetry then tell them.
If I lost an interview because I didn’t know a company’s turnover or net profit, it’s probably for the best as I doubt I’d have enjoyed working for a company that far up its own arse anyway.