The fundamental issue is that present ATS is Obsolete
Don't believe the Dynon $590 ADS-B KOSH ad "ruse". When you add up all the needed parts to make it actually work, plus installation, it is still many many $thousands. Worst of all, FAA's entire ADS-B concept is still seriously flawed, and even if the Dynon was free, FAA's ADS-B doesn't stand a prayer of actually being implemented anything like it is currently being proposed (required).
The fundamental Issue here is that both VFR and IFR are entirely obsolete, and FAA's ADS-B keys to a seriously failing Nextgen concept. The entire US ATS foundation is based on the long obsolete flawed premise of "see and be seen" related to 91.113(b), which has failed time and time again, from the Grand Canyon midair, to AL853 (Sept '69) to Aeromexico 498 at Cerritos, to PSA182 in San Diego.
Further, seeing hundreds of thousands of new tiny UAVs flying into a sunset, for anybody, from F-16s to B777s, to even low end GA, is virtually hopeless. We now can economically and safely do EFR (Electronic Flight Rules) globally, but IF AND ONLY IF WE reformulate ATS from first principles, use dynamic RNP 3D and 4D trajectory based separation, exchange the correct "state vector" data, (and NOT FAA's ridiculous overspecified overexpensive seriously flawed version of ADS-B with UAT and ADS-R), and finally do C-N-S properly (but NOT NextGen, which really should be called PastGen). ALL vehicles need to see each other without ATS help.
For example, the recent F16/C150 midair event isn't the F-16 pilot's fault, it isn't the C150 pilot's fault, it isn't the Air Traffic Separation specialist's fault (I feel bad for all of them, and they all deserve our sympathy and support).
Instead, IT IS primarily the FAA's FAULT, and our fault, for completely failing to force the needed ATS evolution over the past 4 decades, and OUR failing to hold FAA adequately accountable for sustaining this broken, antiquated, seriously flawed system (that spurred FAA's seriously flawed ADS-B). We will someday see this sad F16/C150 event all over again, if we don't now learn, dump FAA's ADS-B, and take the needed more basic action of fundamental ATS redesign from first principles, taking into account the capability of modern technology, just like the phone system did over five decades ago.
To start, FAA needs to be broken up this fall in the budget hearings, and re-constituted with a completely separate ATS that is PROPERLY modernized, and much more closely held accountable for its design, costs, benefits, and performance, ...directly to the airspace users, and NOT to FAA's contractors, consultants, avionics companies trying to economically benefit from mandates, and politically appointed or career FAA officials with marginal or no serious aviation experience.
But for now, don’t waste a dime on any Dynon, Garmin, L3, or anybody else’s version of FAA’s flawed misapplied ADS-B concept.