We have good weather data because of satellites, and there are plenty of private weather sats.

The classical US ground station network is actually run by volunteers and has been seriously degrading in quality over time. Its data was identified as corrupted and useless for climatology decades ago, which is what led to the US CRN being built. Other countries however did not do an equivalent, and their networks are still very low quality. Most of the UK's network, for example, is considered unusable for climate monitoring under WMO standards (but they are still used regardless!).