Guessing this is posted as a reaction to adsbexchange getting bought.
Is this where people are moving?
Is this where people are moving?
Some alternatives to adsb exchange.
For people who just want to look up planes, opensky is probably best. For people who want to feed their data to a different place, the answer is more difficult.
Please see https://news.ycombinator.com/item?id=34520355 for a more detailed discussion.