1.4%? Once you start hitting the $800+k mark theirs guaranteed 7% interest accounts via Chase private banking. I was a banker at Chase and in the bay area, at the time, most the branches, especially bigger ones had private investment bankers in them because you never knew when some bored rich silicon valley or old guy comes in with $100k+ to swap banks etc
10 million would net him $700k (7% at $10 million) a year and thats starting at $800k for 7%..., Chase Private banking might give him 8-10% for that amount to sit with them...
the issue is these fraudsters tell them turn your $20 million into $40 million (or more).
But if you at the $100+ million mark, the safest investments are still real estate (for the most part but expect a crash soon but then another recovery, buying land is better than buying actual houses). Proven Fast food restaurants (taco bell, mcdonalds, etc. Not some local brand with like 10 restaurants cause then its still a gamble). or as you said, just letting it sit in the bank..