As for the real reason most anglicans don't become orthodox is..
I think it is partially xenophobia..going both ways. (West toward East and East toward West)
Partially the perception that east and west are too different..(you notice the intellectuals who studied liturgical and early church history come over the most I think)
Partially poor reception by interested parties interested in becoming Orthodox in the past given a cold shoulder.
Apparently a good many anglicans who were interested in Orthodox were in fact told to "go away because you're not _fill in the blank nationality_ back in the 1960's and previous decades.
I've heard this story told over and over again by many traditionalist anglicans. It's had at least 4 decades to build itself into a legend.
Another legend is that the Western rite's in the Orthodox Church are not authentic and are overly byzantized. This is largely a myth I think, but it sure is popping up frequently on Papal Ordinariate liturgy conversations these days. Certain liturgies of the western rite within vagante groups or ROCOR might be byzantized too much, but the fact that hardly anyone uses them probably tells one who investigares that they arent much to be concerned about. (Most do not investigate very deeply)
His Excellency Kallistos Ware had this sort of experience when the greek orthodox priest said "if you think you may want to be a priest, you might want to go to the russians because they will ordain anyone, we prefer greeks" (paraphrasing here.)
The reputation going around them that you have to be ethnic to be Orthodox still is pervasive.
Thats largely why so many will join the Ordinariate, even though it has profound weaknesses with all the modernism and liberal protestant influence lingering about within the Papal church, it still lets them feel in harmony with other westerners and being under a culturally western bishop (crazy as many think the novus ordo-post vatican II baggage is, they'd rather put up with it for now).
I mean if you think about it...Anglicans and Episcopals have become so desentized to liberal christianity and compromises with heterodoxy within their recent history that the Papal Catholic Church and the compromised positions and chaos it's in are familiar enough to be recognizable, yet not nearly as bad as their recent anglican communion... The Orthodox are just..too Orthodox..?
But we ought not feel too bad, many of the anglicans and lutherans who come to Holy Orthodoxy are the best and brightest or most pious in some sense. Quality, over quantity.