for some of the Old Timer counter and table enthusiasts:
I may be wrong, but, some years (decades) ago, I "think" I remember seeing
a specific profile cutter bit (perhaps for a shaper) that cut a very specific
profile in the table edge - then the reverse matching strip of wood that
had the laminate glued to it. then the two were glued together and the
"black edge" was almost invisible.
of course, this would not be something the average hobbyist or small time
woodworker would have. but, I think it is available.
you just have to look for it. if anyone is just starting out and wants to
pursue counter and table top manufacturing, (like restaurant grade tables),
it might be worth checking into.
here is my very feeble attempt at describing how it works: the green line is the laminate.
the blue line is the cutter bit profile.