There is such a thing as an overcrowded market, but LEO data connectivity is definitely not it yet.
- Nobody other than Starlink is offering anything at all to end customers; all alternatives are in GEO, which means much higher latencies.
- There's no alternative to Iridium when it comes to reliable, 100% global coverage in the L-band (except if you're the military, presumably). Planes and ships are still carrying HF radios for redundancy in high latitudes.
- Nobody, neither GEO nor LEO, other than Starlink, currently offers high-throughput connectivity for in-flight connectivity. (Inmarsat is planning to launch HEO satellites for the northern hemisphere, which will possibly extend their existing aviation coverage there.)
- OneWeb does compete for high-throughput services in LEO in the Ku-band (requiring steered antennas just like Starlink), but doesn't seem to be offering inter-satellite links yet, i.e. no global coverage alternative for airlines either.
- Nobody other than Starlink is offering anything at all to end customers; all alternatives are in GEO, which means much higher latencies.
- There's no alternative to Iridium when it comes to reliable, 100% global coverage in the L-band (except if you're the military, presumably). Planes and ships are still carrying HF radios for redundancy in high latitudes.
- Nobody, neither GEO nor LEO, other than Starlink, currently offers high-throughput connectivity for in-flight connectivity. (Inmarsat is planning to launch HEO satellites for the northern hemisphere, which will possibly extend their existing aviation coverage there.)
- OneWeb does compete for high-throughput services in LEO in the Ku-band (requiring steered antennas just like Starlink), but doesn't seem to be offering inter-satellite links yet, i.e. no global coverage alternative for airlines either.