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HP raising Instant Ink subscription pricing significantly
(www.ghacks.net)
This is a most excellent place for technology news and articles.
You were right until around 2020 when Brother, too, started to roll out firmware updates outright blocking third party toners or even worse, making the printers intentionally print like crap with third party cartridges:
https://news.ycombinator.com/item?id=31860131
Now, that even Brother has turned to the dark side, I really don't know what printer to recommend other than older/used Brothers with firmware updates disabled.