You know there are now Bitcoin ETF's, now, right? So you can now directly invest via traditional brokerage channels, though strictly speaking you are just paying fees to do something you could as easily do yourself with a paper/hardware/software wallet and no fees to hold your investment. But for many people (especially the sort that lose their passwords) that's probably the better option for now.
What you describe is a service, for which fees would seem reasonable. That is not a good argument for BTC as an investment. My original post stated my own personal two rules for investing: I need to understand the business plan for investor profit, and I need to know that the investment is one where my financial interests are the focus (fiduciary accountability), and not some woke or environmental social justice concern.