This would be a really nice product to start ups outside the US tech belt. Hubris of treading water in longterm a-series SUs elsewhere, this could be a viable solution if accessible.

Not the OP but curious why you think so?

If this gives an extra 1% per se, I imagine that is more worth it to a company fresh off a large fundraise with a ton of cash in the bank.

Startups otherwise are lean and won't hold enough cash to get a meaningful return from the 1%.