The whole age discussion just seems so useless, because it's something you really can't do anything about. If you want to start a company, go start it rather than watch a video of people blathering about it, whether you're 16 or 60.
I thought the consensus was that starting a business after your 20s was much more difficult, due to life issues (mortgage, kids, etc.). So, are there actually advantages to starting a business later in life?
I totally agree. I have a friend who is for the most part in the same position as me in my life - married, day job. The only difference is that my wife understands that for my entrepreneurial ventures to bear fruit one day I have to network, meet clients, talk to people, dip into the savings here and there and make up for it and work late or burn the midnight oil. However my friend's spouse expects him to leave his work at 5 o clock sharp and be home and be present and that's it, no and if or but. So he can't even take a freelance gig and do it from home.
If you want to be a startup founder, you either need to be young enough that you have little or nothing (financially) to lose, or you need to have a spouse with a steady job and income, like a doctor or dentist, along with decent benefits.
You also need separate finances to impose a loss limit. The spouse's income, except for a pre-agreed amount, is not to be used for a startup. That's for paying the mortgage and the kids' expenses.
To answer your question: I think so. Overnight success at 28 is the exception, not the rule, because the experiences and contacts one gains as one gets older are valuable. There's a tendency to focus on these outliers, but most successes happen in the 40s. The same is true in research: a few mathematicians are known for peaking (or dying, like Galois) in their 20s, but most will do their best work in middle age. That is less true in the era of post-tenure burnout, but that's a result of the bullshit one has to endure in order to get tenure; after it, most are discouraged and spent.
>like a doctor or dentist, along with decent benefits.
I contend your wife likely will have to work, but she needs nothing like a high paying professional career. You just have to be able to eek out and survive on mostly her income for some periods of time, especially if you can live in a low cost area.