This is just my speculation, most likely due to the Bitcoin mining factor which is getting more and more difficult, and the Bitcoin population is almost all over the world, even nearly 80% of Bitcoin miners have difficulty buying mining equipment which is increasingly expensive. not to mention the Bitcoin that is held by someone who has been abandoned by the owner, because he died without his family knowing about it, of course the Bitcoin will just be buried, and in the end the bitcoin is stored in his wallet, this is what I think the more years will be more and more Bitcoin is expensive in the eyes of investors and miners, not to mention that several mining companies in every country are so big that they are even competing to get so many Bitcoins and the demand is large enough to push Bitcoin to become bigger, of course this will make it difficult for the lower classes.
You make an excellent point regarding how mining Bitcoin is becoming more and more complex, making it unaffordable for the typical individual. That isnt the whole tale, though. An innate mechanism to maintain the scarcity and value of Bitcoin is the rise in mining difficulty and equipment costs! Its intended effect is deflation.
People losing their keys or passing away and not being able to access their Bitcoin wallets? Tragic, indeed, but also one more factor in the coin's limited supply. This is not some apocalyptic fiction; this is how economics works: value is determined by scarcity. Understanding the fundamental mechanics that set Bitcoin apart from other asset classes is more important than simply keeping an eye on investors or mining businesses. For the lower classes, things will undoubtedly get harder, but thats the truth of every successful endeavor