That work has yet to be done properly. The concern at this end is more that there's hardly any clear and present category of industry where older workers are welcomed with open arms.
They tend to be found in casual, precarious positions, part-time and so on. It used to be adequate for those who were having a decent retirement and just wanted to get out and about to stay socialized. In actual fact, more and more people now need a proper full-time job. Those jobs are rare, and they're harder to come by, which is why it's necessary to specifically proactively search out those employers who will welcome an older worker into their workplace and craft the kind of workplace environment that will make them welcome.