That's true when it comes to investing, but investing also doesn't guarantee that when you spend more, you'll get more back. How can you tell when bitcoin will drop in price or when bitcoin will appreciate to spend a lot of money on it? Regarding investing, we also need to care about risk and not just return, especially with a volatile asset like bitcoin. And spending more to get more is not entirely wrong, it depends on where we are spending and what our plans are. We cannot expect to get more in return when we spend on useless, useless things. If we want money to make money, we need to spend it smartly and wisely.
Being smart and wise in spending anything is something that is supposed to be done, especially if it is an investment in Bitcoin that is intended for the long term. It's not always that those who spend more get more, but most of those who invest in Bitcoin can always earn more if they can be patient in bad conditions. For example today, where Bitcoin has almost touched $30K again, of course those who bought more at $25K in the previous few days have gotten more profit if they bought it more.