I don't know where you are getting your "facts" - but I'm afraid you are delusional.
In the late 1700s the percentage of slave owners in South Carolina was 26%. The percentage of slave owners in Pennsylvania was less than 2%.
In 1790, Virginia and South Carolina the slave populations was over 45% of the total population.
In Mass. the number of slaves in 1790 was 1.4%, in NH it was 0.6%, in NY it was 7%, in Conn. it was 2.3%, in R.I. it was 6.3%, in Pa it was 2.4% and in Vermont it was 0.3%. Those numbers are a far cry from 45%.
All you have to do is look at the census figures for 1790, 1800, 1810, 1820, etc. The figues speak for themselves.
for example the 1860 census of TX, indicated that there was NOBODY on the west bank of the Trinity River. (an ODD idea, since DALLAS & FORT WORTH are BOTH on the west side of the Trinity!). in case you're curious about WHY this is, the river & the BRIDGES were "out" during the time the enumerators were in that area.
otoh, the tax-man always "gets his pound of flesh".
ALSO, less than 10% of southerners could have bought EVEN one slave in that period, as MOST southerners were TOO POOR to do so, even if they had wanted to "trade in human flesh" (MOST did NOT!)
free dixie,sw