Viasat simply has near zero profit margins, and quite a few years with losses.

Inmarsat looks like it has 20% or so profit margin for the last few years, but I could not quickly find more years of data.

Also, I would expect decent (10%+) profit margins for a business with few customers and extremely costly barriers to entry. Both of those factors add to volatility, and investors would require a commensurate return to make it worth investing in.