Law has changed since the 80s and 90s. The profession was much more of a bloodsport. Less cases settled, far less went to arbitration, and more money was spent when a case did go to trial. Nowadays the culture has shifted almost completely to keeping costs down and settling things outside of court -- either settling outright or through a mediated arbitration (much less expensive). It's no surprise to me that law scho…
The "demand" (number of disputes) increases with the number of interactions, which is roughly the square of the number of people (each pair is another potential dispute). So if
- population is increasing, and
- supply (courts and lawyers) does not increase as fast as the square, and
- legal technology does not increase output per person[1],
then the backlog steadily increases and people have to work around it.
[1] Many economists insist that law inherently experiences Baumol's cost disease of resistance to technological improvements due to high human component of output, but I think that's more an artifact of the constrains we place on courts.