[AlotOfReading]

We don't have anything better because radio silicon is a terrible industry to be in. The amount of institutional knowledge and capital required is insane, and the network effects on the protocol are massive.

The flip side is that consumer electronics manufacturers are horrendously cheap when it comes to BOM cost. If your component doesn't directly provide a feature list item consumers will recognize, it's not going in the device. Similarly, consumers don't care about radio protocols that aren't universal. This leads to a chicken and egg problem where manufacturers won't introduce new things, and when they do consumers won't use new things because new things don't stick around.

As for why BT sucks, it's a combination of very few chipset manufacturers (at one point it was basically just Broadcom and CSR, now both part of Qualcomm) that suck at software owning the entire market, legacy protocol design decisions constraining future capabilities (this is why audio sucks), and simply being too complicated.