Eventually the price will come down, like everything else. And even then it's a pittance compared to an expensive boat.
It 100% changes the nature of fishing when you can always tell if a fish is there or not. And can see what the fish is doing in real time. Personally I enjoy trying to figure out where the fish are and piecing that together. And I don't want to look at a screen all day. I go to great pains to escape my computer, which is why I'm fishing in the first place.
I can appreciate that Livescope makes you waste less time and stop fishing dead water, so you can spend more time seeing what fish are doing. On the other hand, you don't need to spend half as much time thinking about seasonal patterns or bass behaviour.
Jury is out on the impact it has on fish populations. I can't imagine the result will be anything positive, but the extent is hard to gauge. The one thing I'm certain of is that ice fishing will see fish getting hammered. So many people ice fish and it's freaking hard. If it becomes 20x more efficient (not an exaggeration) that's a lot more fish. And most of them end up in a freezer.
As far as tournament fishing is concerned, there are limitations on tournaments already, same as in every sport, so I think removing it is fine on those grounds. But if pros don't use it and regular Joe Blow does, Joe Blow will potentially outfish a pro due to his tech advantage. And I don't think the pros like the "look" of that. But if catching fish via livescope is seen as its own category, similar to using live bait, that might not be a problem. Personally I don't enjoy watching people LiveScope, same as bed fishing.
Tech won't stop. At some point if you know where every fish in the lake is at, the boat drives itself, maybe you have a self-casting rod/reel, AI picks your lure for you. You don't even need to leave the house anymore. Is that still fishing?