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Why doesn't anyone make a midrange wildlife lens?
f/11 and I can't be bothered, but the f/4 is no fucking way. But I can see myself stretching to $6,000 for an f/5.6. That feels like a happy medium with headroom to stop down or use an 1.4x converter.
The Olympus 300mm f4 at $3,000 is fair enough for videography, but if you shoot stills for printing you're coming home with postage stamps.
Honourable mentions to the EF 400mm f4 adapted on an R7, and to the Sigma 500mm f4.