Because blockchain is also a good and useful technology , yes its good if you can introduce it to others and recruit to join this technology, together with bitcoin , I think it is more productive if the bitcoin and blockchain will go together and produces positive output in the cryptocurrency world.
The question is how can you convince them to "join" or somehow interact with this technology? It's like asking some naive people to use smartphone while they don't know what is Wifi, Bluetooth etc. I partially agree that you can convince them by Bitcoin because of none of the other reasons which is gaining profit through investment, then what if the price swings like right now? Who's to blame? Who's particularly responsible for it? You can't blame the technology since it is just doing its job on how it is made or programmed. I kinda remember that issue here in my country where it was like a cooperatives collecting investment from the members to invest in some project using Bitcoin. Ending point? The lead was arrested for it. The members got scammed. The government partly redefines what Bitcoin is at that day. They're aware that it is an unstable currency so they can't blame it, but it was such luck that they didn't ban it.