Pardon me but I have a Dumb Question… 
If Renunciants don’t make higher teachings freely available to those lay people who show suitable interest, how on earth will the gradual training and conversion from putthujana to 5 precept lay buddhist to 8/ 10 precept noviate to renunciant occur?
And who will be the Authority to decide who exactly is “worthy” or “ready” for higher teachings?
And what about those who don’t agree with the decision of that Authority?
Can you see where I’m going with this? 
Sooner or later there will be the emergence of the “Benign Dictator Guru”, then an inner core group will emerge, then will come diktats, expulsions, protest groups… schisms, loss of the true teaching and the end of the Buddha Sasana… that is invariably the human way.
The path to Absolute Evil is paved with good intentions.
Instead, perhaps we should consider…
What are the causes and conditions that have allowed the Buddha’s carefully organized method of passing on the Teachings to not only survive but flourish for over 2500 years?
No other human organization has lasted as long.
So perhaps, there’s something to be said for not trying to fix what ain’t broken, mate!!
