If i am just a new investor in bitcoin having a price of 100,000$, i think i will only buy a small slice of it because i could not really afford to buy a whole of it. I am going to hold it, let it grow up higher and if the price is already right for me, then i will sell it right then.
On a normal day, you cannot buy more than what you cannot afford. If bitcoin is $100k or even more, it is few of the satoshis you can lay your hands on that you will still be able to buy in anyway, so I do not see how that is a serious thing to be assuming how much one would buy in such instance or not.
Apparently, just very few people would be able to afford to buy a whole bitcoin in such a scenario, but that being said, to see such a huge price, it would only be sustainable if it is driven by real demand and not just some mere speculations.
you cant buy on them on a normal day but you can maybe afford them on the next day due to the fact that bitcoin is fluctuating from time to time . it can go up and it can go down without prior notice , thats why the best thing to do is wait and hold your capital as long as you can because the day will come that you can get the most out of it .
but if we are only basing on the question of the op. i think most of us cant really buy a one whole bitcoin but we can still buy bitcoin in a smaller parts or in the form of satoshis/mbtc .