Start with the premise -- Silicon Valley VC firms matter for entrepreneur success. Is this true? And especially, is it true for early stage companies, with founders that are known to VCs; or do angel investors or startup money from friends and family matter more? Instead of speculating, consider the leading Silicon Valley VC firms -- and examine their online featured list of investments. Note mention in this article that the venture 'industry has gone back to its IT- and IT-enabled services roots.' So let's take a look at their historical successes. Sequoia Capital -- health-related investments are disease oriented, big hits include LinkedIn, PayPal, Instagram, Kayak, and eHarmony. For sure, the full list contains many useful tools for people of all ages, but unless we're talking diabetes and glucometers, nothing much that is age-related for seniors.