I agree, bitcoin needs to remove the hardcap on its controlled supply.
SOmetime very soon, e.g. 2020-2024, 90%+ of bitcoins will have been mined. At that point, one can easily argue that through lost coins + satoshi's coins that bitcoin will become deflationary: the block reward (3.25) will not be able to usurp what is being or has been lost from the network.
That will cause bitcoin to become a deflationary commodity.
Since the block reward cannot defeat what is being lost on the network, bitcoin's value will rise due to its pure scarcity. This will absolutely create a bubble, but one that cannot ever be re-flated... this would be an endgame bubble. If you are looking to exchange fiat into bitcoin somewhere between 2020-2024, you will be faced with a reality where 95% of all bitcoins will already have been mined and its monetary base will decline forever into the year 2100. Also one has to consider that if bitcoin does ever reach a deflationary state, you may also see transactions decrease because people are discincentivized to spend bitcoin when its value is increasing. If that occurs, miners will lose fees, and bitcoin's network security will suffer because the block reward will be negligible.
This is of course assuming that in 2020 bitcoin will be worth more than it is today. This also does not make any assumptions as to what blockstream can accomplish, or bitcoin 2.0.
There's no doubt in my mind that for bitcoin to truly succeed, it's monetary base needs to be expanded.
because where we are today in terms of development is far behind where bitcoin is as a finite commodity (that has been mined 66% already).
This makes no sense, you are assuming if bitcoin increases in value and becomes deflationary (like gold) that it won't be traded but we know that's not true and it still gets traded constantly and consistently.
There will still be speculators, there will still be people spending a bit of it and there still will be debts that need to be paid.
first,
humans have been mining gold for probably well over 4000 years.
We will mine 95% of all bitcoins inside of 20.
Depending on who you believe, there is most likely more than tens of thousands of tons of gold to be mined on earth. We don't know what the gold market looks like at 95% mined, or the oil market, or any other commodity market.
Your chart is not very analogous for not only those reasons, but also because USD and basically every currency in the world has been devalued tremendously over the course of that chart. Gold today for all intents and purposes is not used as barter or trade or exchange of value.