Yes anyone can use the DCA but majority of people who used the DCA are people that want to start with a small amount, some rich investors also consider using the DCA but they're very few of them since they have the money to buy huge amount of Bitcoins at a go so they see the DCA strategy as a time consuming method since they will be investing the same amount at different intervals when they can just hit it once and watch their investments grow but that not withstanding, for someone who is still in the accumulating stage of his investments, the DCA is preferable to other methods of investing in Bitcoin
From here, of course, DCA does not look at the budget that must be spent to be able to implement DCA throughout the investment journey carried out by the investor.
Of course someone's budget can increase over time and it is unexpected or happens suddenly, I mean when someone gets an increase in income then of course he will buy bitcoin by increasing his budget or being more aggressive.
Although in a travel scheme for long-term investment, of course we can also use several other strategies because of the budget planning structure that we have set before we start investing in bitcoin.
Meanwhile, for the types of strategies for saving expenses in order to be able to reserve funds in the reserve fund category. It is certain that at each stage there will be an increase in the budget which they will execute, either more aggressively or in a lump sum.