Understood, as I was one of those who were laid off right as the recession started.The biggest cuts in the industry arrived in the period of the 2008-2009 "Great Recession" where a combination of the economy, improved technology and the arrival of truly portable new media all occurred. While there was no single "anniversary date" for this, it began in that period and continued on in later years.
Add to this the introduction of the PPM, which showed audience to be about 1/3 smaller than previously believed, and rates in the top markets were driven downwards.
But radio revenues have dropped by half since then (since 2005, according to newspaper articles I've seen, but the Recession undoubtedly also took its bite from them), and corona isn't doing radio any favors. Or the economy in general, for that matter.