I'm going to go out on a limb here and conjecture that the nomadic aspect of their culture is less of a hurdle than their deep-ingrained distrust of Gajo, or non-Romani. On romani.org I found this:
http://www.romani.org/rishi/retygajo.htmlThat probably explains the anecdotes of their reluctance to share their culture with outsiders. Also, much of what I've been reading on my own backs up Z's statement about the passing of cultural traditions. They are ridiculously insular, moreso than any other culture I've read about, and as a general rule it seems the the more insular a culture is the more prone they are to waning or even backtracking in economic and social progress. Makes me wonder if the reddit poster's suspicions about the women having quotas to fulfill for their husbands could really be the case. Sad, if it is...
I'm not sure if I'm just waxing nostalgic for no reason here, but with FW's wondering about comparative economic advantage I was reminded again of my granddad, and how he made his living. Apparently he had a real wandering streak, like he'd just disappear for a day or so and leave my grandma worrying. He wasn't being unfaithful or anything, he was just wandering the town and possibly finding some of his friends and drinking. My grandma actually called him "Hobo", and my cousins called him "Grandpa Hobo". Anyway, he was also one of those people who had to work with his hands, and combined with his need to get out and into the open this made him an excellent construction worker. He had a real reputation for concrete and mortar work around town, and he got a lot of independent contracting jobs. He passed suddenly and unexpectedly, and on the day of his funeral the director of the funeral home told me that they had been planning on calling on him to put in a wheelchair ramp in a few weeks. He's kind of a local legend now.
Perhaps I am just being needlessly nostalgic, or perhaps my granddad's life is a somewhat valid case-study. With the kinds of tendencies he had he managed to cut out a good niche for himself in the city market. At the same time he also felt at home and welcome where he lived.