I was thinking same thing. We bought our property a couple of years ago with park like setting and 8 sugar maples around 75 years old. (There a few more in the back of the property I will tap next year). My first year sugaring 12 taps produced sap at 3.37% and 4.5 gallons of sap. I could not believe the sugar level at first, reading what sugar levels usually are. But realized what you said spacing and no competition makes all the difference. I will be planting ten more this year for future generations.
2016: Second Year;
..........15 Taps- 177 gals 0f 2.40 % Sap / 4.25 gals of Syrup
......... Cinder block arch evaporato with 2'x2' Stainless Steel Pan
......... Finishing in stock pot on propane burner
2015: First Year;
......... 12 Taps - 135 gals of 3.37% Sap / 4.56 gals of Syrup
......... Cinder block arch evaporator with 2'x2' Stainless Steel Pan
......... Finishing in stock pot on propane burner