The Compact Disc surfaced circa 1982. That year a local salesman used a compact disc as an ashtray and it still was playable with no fault. I immediately gave away all of my LPs and started buying compact discs.
The chart shows sales data from the RIAA which clearly shows the peak circa 1999 and 2000 before it began to fall. In 2020, the RIAA said 31.6 million discs were sold.
Over the last 18 months I have been buying 100 hit collections which come on 5 CDs which are low cost ways to expand a music collection. Other select discs are found at thrift stores for as little as 20 cents. The media rack has room for over 1000 compact discs but its unlikely it will reach capacity.