isn't it that there is no point in creating POW altcoins because they are very easy to attack? Such BSV, for example, uses the same mining equipment as BTC, but has only 0.1% of BTC hashrate. So it is enough for 1 large BTC miner, who has 1 per mille of BTC computing power, to switch to BSV for a moment and can do whatever he wants there, and then return to BTC mining? Therefore, POW works great only for the leader on a given hardware (ASIC or GPU)?
It depends on how the mining pool works. In the end, they are mining for profit. After Bitcoin mining pools have the possibility of exploiting part of the hashrate to mine Bitcoin Cash and Litecoin such as ViaBTC, F2Pool, but starting a new currency from scratch using the POW principle will require more effort and time compared to POS.
$50B seams to be way to much in just 5 years. during this time we will only have 1 bull run or none at all. With ath probably around $150k (in 2025) and the next low around $50k (in 2027). This is not enough fuel for the almost 10x increase in miners market value.
I took into account that the BitcoinETF might be approved, and these institutions that manage trillions of dollars will establish mining farms if they want to hold Bitcoin and ensure that everything is sufficiently decentralized, but let's say it will multiply 3 times, reaching 24 billion.