Ask HN: Why is there no boom around the baby boomers?

There's a large market of retired people looking for ways to stay active and/or generate a small amount of side income. Are there any businesses targeted specifically toward their demo? My dad has a ton of time on his hands and occasionally dog / house sits, and I'm he's not the only one. I'd love to get him hooked up with an existing network but there doesn't seem to be one that I can find. Does anyone have any suggestions?