Any new equipment to be fitted to multi-million dollar commercial aircraft unfortunately requires very lengthy and expensive certification by the manufacturer, for each aircraft type. Consequently, they will then charge a whole more to offer it to operators.
As long as the current avionic fit meets legislative demands, operators are not usually at all keen to spend millions more fitting fancy kit, which the purse-string holders often consider as little more than 'pilot toys'.
It sounds like you have plenty of disposable income to throw at your "crummy little 2017 Cessna 182", so perhaps you should be very grateful?