So what do you think would happen if another Cryptocurrency (Example Monero / Ethereum etc) were to take Bitcoins spot as first in market cap?
The small percentage of the people would hold the Bitcoin further if that situation would happen. Bitcoin would be dumped in the end and this short taking of the Bitcoin off the throne would actually be the Bitcoin demise because it could never return to the first place.
First overtaking would mean more and more dumps with the impossibility for the Bitcoin to recover.
That situation is not going to happen because the Bitcoin established a strong base of the investors which are backing it flawlessly.