"Data monopoly" implies FR24 have exclusive use and control over the ADS-B feeders. This simply isn't the case. There's nothing stopping you feeding your data t

"Data monopoly" implies FR24 have exclusive use and control over the ADS-B feeders. This simply isn't the case. There's nothing stopping you feeding your data to other sites/apps. Also (as is the case with flight aware), all users providing ADS-B data get free subscriptions to the paid for parts of FR24s service. Building an app, maintaining a website (that has something like 2 million daily users iirc) and building out backend infra to support the huge amount of incoming data and turn it into something greater than the sum of its parts costs money. What many people don't realise is the data you see on FR24 is not simply derived from ADS-B broadcasts. Data like fight numbers comes from other licensed sources; MLAT triangulation is done at FR24's end; telemetry data for areas without community ADS-B coverage comes from partnerships with radar operators, airports (and soon satellite, when Aireon is active) etc. If you're curious to know what raw info is included in a typical broadcast, this is a good link: https://www.adsbexchange.com/datafields/ https://www.adsbexchange.com/datafields/