There's some detail in the Apollo Masters wikipedia page:
https://en.wikipedia.org/wiki/Apollo_Masters_Corporation_fir...
> With the destruction of Apollo Masters, producing lacquer discs fell solely to a small Japanese company, MDC. This caused a significant strain on the industry, as Apollo Masters was responsible for 70-85% of lacquer production.[4][5] As a result of the strain, orders became backlogged and delayed, (...)
> With a decrease in lacquer production, some vinyl pressing plants turned to alternate means of producing records, including direct metal mastering, a costly method of producing records with copper instead of lacquer.