Yeah gyro stabilised is the only way to go for orbital and non-geo stationary satellites. Unfortunately it’s big $$$
Discussion
These are stationary. But being even a small amount off has a pretty significant impact on signal to noise ratio, especially for a small dish.
The service is very tolerant of outages. I have to look into this again, but new transaction data is transmitted real time and last six blocks are retransmitted hourly or something like that.