For the future I think for the miners will still be present in the crypto world even though they already have a very good coin but I am sure for the future there must be a new coin present, and they will definitely continue to mine in the coin, if everything they want has been achieved then that's when they will plan to retire.
Miners will never retire if they still get good results from their work and will continue to work with the mining equipment they have made, so the matter of the goals they have achieved is only as a target, while the work will continue.
Well, not a single miner feels their money is too much and they need to retire, they just feel that everything is never enough, from the equipment to the amount of mining per day, too little for them and every time they have more capital and profits, they will be willing to expand more new farms. People don't need to think about scarcity and mining that doesn't make profits, profitability is just a matter of time while crypto is still growing, and too many targets can be mined, unless crypto disappears, otherwise, miners will still do their job every day, too leisurely and passive work, retirement is a distant thing