DCA is effective in the process of averaging against volatility and putting purchases in an ordinary income stream, however, when you have a lump sum, it may be worthwhile to buy on the downside or buy more actively. It all depends on whether you have an effective plan and with a clear plan, you should not touch on monies that are likely to impact on your necessities. Basically, both strategies can be applied using the same capital, it is primarily a matter of timing, risk-taking, and disciplineness when using discretionary funds.
The discretionary income to be used depends on the level of your comfort and not even about the market environment and If you say buying on a Lump sum is worth while buying on the down side then to me you are describing buying the dip and not buying with the lump sum, because talking about buying with the lump sum has nothing to do with the market conditions but rather an investor decision to buy immediately with the available Lump sum amount irrespective of the market conditions,
You are right, however I believe that some people prefer not to invest all of their money at once without thinking about market conditions first. Sure, a lump sum means you invest everything all at once, but not everyone is comfortable with that.
Many people choose to wait for a better price before investing their money, because no one wants to buy when the market is too high.
Those that still wait for a better price as you called it are just messing around wasting valuable time that should have been used to buy and add more to their stash because they don't know that the price they might be waiting for may not come in most cases, which will be very discouraging to even think of buying again because the price has moved upward to a figure they thought is too expensive, since they fail to understand that yesterday was the best time to buy Bitcoin, and another best time to buy is today, so trying to act smarter than the market will like delay them in their accumulation than someone that is just buying regardless of it price anytime he has a discretionary income to do so
Many people are looking for a good opportunity to buy Bitcoin, the current time is the right time to buy Bitcoin. If you wait, I think you are making a mistake, because those who wait to buy Bitcoin will basically not be able to hold it for a long time. If you have money, it is better to invest in Bitcoin immediately, because the longer you wait, the more the price of Bitcoin will continue to increase.
So if you can buy Bitcoin at the current time, then of course there will be savings on the purchase price, if you have 1k dollars or 2k dollars to invest, then it is better to invest immediately, it is better not to wait to buy dip.
Because to start buying Bitcoin, buy as much money as you have in a row, and then from admission you can invest $100, $200, up to $500 per week according to your weekly income.