Eye-Fi cards, which connect cameras to WiFi, depend on proprietary software which depends on servers — which the manufacturer will shut down, making it impossible to configure the cards.

Using proprietary software always puts you under someone's thumb, more or less. When it depends on a server, that is acute nastiness. And that's the way the "Internet of Things" works.

If the purchasers of Eye-Fi cards were wise, they would have rejected the product for this before buying it.