Early Ethereum had a C++ wallet. In 2014, if you were into crypto, you were perfectly happy with a C++ tarball to provision your wallet.
But I'll accept that there's little data to support my snap decisions scenario. I'm not saying that it would open up the flood-gates of investors.
My only point is that I suspect it's not all about saving fees.
And I should clarify that I'm not opposed to someone working on this, if they want. I'm just not convinced it's important enough to devote work to it now.