BTC price change during its first dozen years (2009-2020) was ca 8 orders of magnitude (from 0.001 USD to 50k USD)
BTC price change during its second dozen years (2021-2032) will probably be +/- 1 order of magnitude in the nowadays USD purchasing power
and the same for its third dozen years (2033-2044).
The first years BTC hyperdeflation was just a matter of beginning. I bet it was similar with stocks 400 years ago and gold few thousands years ago... the gold prices were orders of magnitudes different in different countries just a few hundreds of years ago.
With growth of price and market cap, the ROI annually or cyclically will become smaller with time, as it's true not only with Bitcoin but all other assets. Earliest birds and investors have big advantage of very cheap entry prices but they actually take very high risk like Bitcoin will die. Now in 2026 or some recent years, there was no longer such fear because Bitcoin was already matured enough, strong enough so risk of sudden death no longer exists. However, late comers, late investors had disadvantage of more expensive prices for their accumulations.
However, think positively, if they can buy bitcoin, hold it and get very good profit years later, why don't do that. Why do they have to concern about their entry prices in 2026 and next some years while their investment portfolios are for very long term.