Bitcoin is never going to be extinct
There are factors need to be met for Bitcoin to cease existing.
1. Miners
2. Developers
3. Users and investors
4. Government
The most important factor would be the miners, if miners stop mining Bitcoin then there will be no one to push the transaction, thus it will initiate the collapse of Bitcoin.
Without any active development due to developer is missing, Bitcoin will be left to being obsolete because of its technology cannot cope up with the latest technology and will be abandoned by its users because there are more user friendly and updated currency out there.
Users and investors, if no one will use Bitcoin then there will be no demand, thus no one will be no transction to be mine and no people to buy the mined BTC. BTC economy then will collapse.
Government, this play a major role for adoption, but little to Bitcoin being instinct but nevertheless if all the government Banned Bitcoin then the market will collapse and will only be use at the dark web.
In short, at the current state of Bitcoin, there is a rare chance for it to be extinct but I still believe that there is no forever in this world. When and how Bitcoin will be extinct depends on the stated factor I stated above. If those 4 agreed to abandon bitcoin then Bitcoin will be dead .
I believe its consensus will be higher and higher in the future.
Are you talking about the number of developer that will join the discussion on how to improve Bitcoin? Well Bitcoin being more popular each day attracts more developer to participate on improving Bitcoin, so yes it will increase its consensus in the future. If it is a price then most certainly it will due to decreasing supply and increasing demand.