Not really, we have all been lucky to have access to cheap used kegs as long as we have. Instead of scrapping kegs whole, the soda industry could have decided to crush them - but they didn't.
But as the value of used kegs continue to go up new kegs will become more attractive. And at ~$120 new kegs really are a good deal particularly when you consider that the average used keg is over 30 years old. And with a new keg you are starting out brand new, with all new gaskets, new lid, new closure gasket and a nice new finish.