I had very similar thoughts! I was even thinking about Incubators & co-working spaces for people above 50. It would be really interesting to see the hobbies they would want to convert into a business or the problems they would like to solve at 50 years of age.
I believe the attitude towards tech is drastically different between youngsters & 50+ folks. For e.g. while I do a lot of exploration & Discovery on mobile; my parents do very few & specific activities everyday. When we bought a tablet for them recently, I genuinely felt that device experience (consisting of apps , lockscreen , audio & more) should have been more curated. UI is a part of the puzzle & should not be looked as the primary problem I feel.