If you don't understand why in a geostationary based link, the antenna size at either end matters a great deal for overall link budget, gain, Eb/No and what modulation you can use at a certain MCS and code rate before it gets too blurry in a QAM eyeball chart, there's no sense in talking about satellite communications with you.

I note you didn't answer my question because you have no idea of what modulations, channel size and such are required to actually push 10Gbps through a satellite link to a single terminal. I think you're going off Viasat's marketing material where they're claiming aggregate throughput of an entire satellite or something.

Show me the exact hardware configuration of modems you think are capable of 10Gbps by geostationary and how much transponder MHz it needs.