I regularly buy ketchup and salad cream in widemouthed squeezy bottles designed to stand upside down. The actual delivery is through a narrow nozzle, but at the end one can remove the lid and scrape. Can't ever get it all out, though. But it does stop what someone once described in verse...

Tomato sauce, you shake the bottle,
First none comes, and then a lot'll.

I don't think many people are turning down the opportunity to buy this way.

Penny