After I started commuting, I was introduced to my first sportive, by a friend. It was very enjoyable although rather busy and somewhat daunting at first. What really got me though was the price to enter, just to ride on the local roads
A year later and ( I think via AcF ) I found out about audaxing. What really struck me was the price to enter - or lack thereof.
Audaxing is a much smaller community. Many know each other but as it is on a much smaller scale it could appear slightly more elitist ( cliquey ) to the unitiated.
What appeals to me about audaxing is the self sufficiency side. I was sort of doing that on the sportive anyway, but most were not.
The thought of having to stop because my chain had broken etc and not carrying any tools goes against my commuting brain - so in that respect, my thoughts are closer to audax than sportives.
I would be very saddened if audax was turned into sportive styles. It would loose me as a participant if that became the norm.