Just the opposite, development of commercial Blockchain use, especially by mainstream banks with fraud protection, will most certainly end any public desire for Bitcoin. Why would you use Bitcoin when you can have a professionally developed system that's automatically fully integrated into society?
Current Bitcoin devs can't rapidly solve the growing pains of Bitcoin. If some well financed company like Chase bank or Wells Fargo decided to throw money at "Blockchain Technology" it sure as hell wouldn't take a couple of years to solve the block size issue.
Bitcoins continued success still relies on young people (broke people) wanting to mine free money from the internet. How survivable will Bitcoin be in ten years when that's no longer possible?
I don't think so. Bitcoin remains highly attractive to a lot of people even if there are more convenient blockchain solutions by banks. We are about to enter a phase of high fiat price inflation, as central banks around the world have expanded the monetary excessively. Public debts have soared to extreme proportions. Under such circumstances, a non-inflationary and highly fungible currency like Bitcoin is perfectly suited for fiat capital flight.
With SegWit, developers made a great leap forward towards scaling Bitcoin in am efficient and decentralization-preserving way. I don't share your pessimism here.
Banks are using "Blockchain Technology" to provide centralized services. However the only reason for using a blockchain is enabling decentralization. Blockchain use comes with a huge loss of efficiency compared to traditional databases that makes no sense at all for centralized solutions. Banks will waste their money...
ya.ya.yo!