Sharrows are extremely cheap. Their cost is the cost of putting down paint. I think that filling pot holes is probably more expensive. When you're trying to save money, you don't necessarily cut the cheapest thing in your budget. It tends to have little effect.

In any case, sharrows help educate everyone about the right of bicyclists to use the full lane and that helps make bicyclists much safer. Some people still don't get it but the number of people who do is growing.

Would sharrows have prevented the Ortiz collision? We still don't know how it happened. If sharrows had been installed in the right hand straight through lane there and Oritz had been riding in the middle of that lane, it might have prevented the collision. My suspicion is that he was riding on the right edge of that lane and that the first driver to hit him was coming off the ramp too fast and merged without looking. The damage to her SUV was on the front left. If he had been 5 feet further left, she probably would have missed him. It's pure speculation of course. As I said, we still don't know what happened.

I haven't ridden the Bayshore Bikeway since the recent improvements (maybe 2 years since I've ridden that way). I know that I very much liked the bike bridge over the river that they put in some years back. Making it a nicer place for people to ride up and down the coast will likely encourage more bicycle commuting along that corridor.

I don't think this really merits a new thread. There is a thread called "Just Sayin" for random thoughts or "Infrastructure" for opinions on infrastructure.