Market capacity is a reflection of the price and the limited supply, but it does not mean the true value.
In case of bitcoin it kinda does because its supply is real, so is its price. Every single satoshi in circulation was created fairly and through actual "work" aka mining. And the price is decided in the market through demand.
Market cap is mostly meaningless when it comes to altcoins that have fake supply (eg. premined coins) and fake price (eg. pumped and are before dump).
Yeah but keep in mind that the higher the market cap goes, the more work it is to get the price to increase. Remeber how easy it was going from $30 to $250 and then to $1000 during 2013? Or how we went from a low of $200 all the way to $20000 within a year and a half.
Now it’s getting more and more difficult. We broke ATH but are stalling and struggling to go higher. This is what happens when market cap is high. At a price of $200, you could get retail to buy maybe 10-50 BTC. But at a price of $70K most retail can only buy a mere fraction of a coin and hence why it’s going to be a long way to $100K.
I don't think the reason is market cap being high, at least not the main/biggest reason.
When you are comparing 2013-17 with today you should also compare the economy of 2013-17 with today. We've already had 2 major recessions in the past 5 years and that takes toll on the economy and people's investment habits and capabilities.
For example in 2017 when price soared to $20k in a couple of months people across the globe weren't struggling to make ends meet like today and they weren't struggling to pay back their loans at a much higher interest rate that went up overnight.
Now I believe not only such massive rises (eg. going from $70k to $1 mil in 6 months) is possible but it can be very easy IF the recession ends and they reduce interest rates. Because first of all after interest rates coming down, the extra money people paying back their loans are going to be left with is going to be invested in things like bitcoin. And the money that had gone into the scammy bonds government print is going to exit and flood into other markets including bitcoin. The tsunami of money coming into bitcoin can shoot up the price very easily.