@Walter Roby jr well then just to continue the discussion... I don't see the logic behind the investors decisions; or the chart and it's explanation has too many inaccuracies. Cash is king as we know, and with an unlimited supply to invest, any of us could begin living passively asap. So assuming these investors do not have millions of dollars of their own to invest, why would anyone flip one $600k house, when the profit is "$45k" when they can flip three $200k houses and make "$120k - $150k".
That would make the ROI of $200k houses between 20% and 25%. Why would any investor settle for 7.5% when 20% or more is available to them?
I do not know much about Encino California, but if the majority of homes are around $600k aka 8x the median California household income, then perhaps expressing that there is a low quantity of buyers near $200k is inaccurate. Perhaps more accurately there are very few properties that have an ARV around $200k. Not few buyers looking to purchase.
Regarding high end properties, "margin" is much different than ROI. It goes without saying that flipping something at 1.2M needs more margin than 600k; not sure if it requires higher ROI.
Either way, ROI is a poor metric to express flipping profits imo. Annual ROI is much better. The average flipper takes 1 year to get into and out of a house. To require $600k to make $45k per year is pretty meh compared to someone who could get into and out of 2 houses a year, literally doubling their profit to $90k a year.
With all that said, I think the chart and it's explanation leave a lot to be desired. What value or goal are you looking to accomplish with the chart?