it's not just about waiting and anticipating Bitcoin to hit $100k that matters, it's more of buying and building a good portfolio before it even gets to that price that matters the most.
There are plenty of newbie bitcoin investors who are already accumulating bitcoin in the past recent years who are ONLY able to buy so much bitcoin per week, and so they will still be accumulating bitcoin once bitcoin reaches $100k and beyond.
There will also be plenty of brand new entrants to bitcoin who will be accumulating bitcoin at $100k and beyond, so there will be plenty of folks who had not been able to accumulate enough or close to enough bitcoin in the sub-$100k prices.
Perhaps thinking about accumulating as many BTC as you can in sub-$100k prices, but don't be deterred from ongoingly accumulating BTC whether BTC prices are even supra-$100k, especially if you are still in your BTC accumulation stages.
Definitely, new investors will keep entering at any price at all because it may be at that particular time they got the got the confidence to invest because there are a lot of people that is still being doubtful about the price of Bitcoin like they are scared if the price of Bitcoin can still skyrocket again more especially now that the price hasn't had much increase in price so some people will be monitoring the activities of Bitcoin price so when it eventually increases or reaches a new ATH, they will want to come in at that time with the beliefs that it will keep skyrocketing but it will be lack of experience for someone to monitor the price of Bitcoin before they invest.
Newbies will continue to come in to invest at any price point maybe that was the time they got the conviction to invest so it's no big deal, the most important thing is too accumulate as much as they can whenever they find it convenient to invest whether it reaches $100k or not. Majority of people are still in the accumulating stages of their investment so even when the price hits $100k there will still be accumulators.
As long as bitcoin network is still working new investors will always buy bitcoin at different prices in future and even old investors because bitcoin is a commodity. As the years loss passes on so will be price of bitcoin increase which is why it is better that we use the opportunity that we have now to keep on accumulating bitcoin so that when the price will be higher in future, we will not be worried but happy because we have accumulated a good size of bitcoin in our portfolio.
Early investors who bought bitcoin very cheap at the price range of $400-$1000 did not know that bitcoin will reach this price so quick and they are happy that they bought a good number of bitcoin early. But for those who thought that investing in bitcoin was a waste of time and that bitcoin who crash did not invest at that time, will be investing now in regrets because they missed the opportunity that bitcoin presented to them.
This is how it will still keep on repeating itself for people who have the money now but don't want to use the time to invest in bitcoin and grow their bitcoin investment overtime in order to reach their bitcoin target. If bitcoin prices reaches $500k, that is when some people sleeping now will want to start investing. Let bitcoin price not discourage you from investing in bitcoin now if you know that you love to invest in bitcoin as an asset because you will invest later when the price will be higher than this.
100k is just a figure and I know that a lot of us will still go on with our regular DCA when the price is above 100k because I am still accumulating and will love to reach my bitcoin target no matter the years it will take amd the price at which bitcoin will be because I am planning to use my bitcoin investment as my pension. No matter how expensive an asset is, there are people who will still be buying.