Last Saturday I actually visited the Komomaris and Alison Vance in CT to check out what was really going on, and they both had relatively controlled bamboos that didn't take up that much space and would have been easy to completely remove(all rhizomes included) even without power tools within a few hours, perhaps only minutes with a chainsaw if they were to be clear cut to soil lvl to be mowed over. They are both on very small properties so it wouldn't even be possible for them to take up that much space.
I also looked around for a few hours to see if I could find any properties with overgrown bamboo, but it looked like bamboo was pretty rare there, and based on my observations, it doesn't even spread that fast. Maybe faster than in upstate NY, but still nothing compared to the spread rates that I've seen, even for yellow groove.
Here's the Komomari's planting which is somewhere around 5ft wide by nearly 20ft long, with the tallest one between 30ft/31ft, and around 1 3/4 inches in diameter. It was clearly contained with 80mm high density barrier.
Some of the culms were sprayed with glysophate by somebody so half the culms are dead. So were the grapevines and some other shrubs along the fence. Whoever did this didn't do too good of a job.
I think it sometimes looks pretty cool for the surviving culms.
Here's Alison V's bamboo which is approximately the same size, maybe a bit thicker and healthier, but slightly shorter as the tallest culm only appears to be in the 28ft range. It grows along the side of the road and there is no barrier on this one. It also seems to be stopped by the road with nothing showing up on the other side of the road.
Some of these culms were in the 1 3/4 range and they could be climbed to a small extent. Obviously I wouldn't be able to climb 20ft without snapping these.
It makes a pretty good screen.