The end results of the link budgets required for geostationary to low cost consumer grade terminals means that now matter how good viasat's tech is, the end result is going to be mediocre. Have you actually lived on the far end of a consumer grade highly contended oversubscribed ku/ka band vsat terminal?
Viasat's modems and rf chain stuff are about as good as can be expected within the very constrained BOM budget, antenna gains and link budgets involved.