My place backs onto a nature reserve, one of 4 in my area. It has swans, Canadian and Egyptian geese, variety of ducks and other birds. Also has a few red squirrels, an endless supply of field mice and brown rats and lots and lots of bugs
I live in a popular area for cat owners, so-much-so that there is a local cat walking club that for obv. reasons runs on a different day to the local dog walking club
Not sure about where you live in the US but there really isn't an issue with a 'lack of' species where we are. I know it's not an excuse but with the amount of cats in this area, it helps keep down the rat population, which is good. enough rats to keep the insect population down but a local rat cull isn't a bad thing.
There's a wild cat indigenous to the UK, well scotland, scottish wild cat which i think is endangered (possibly around 350 left in the wild). They are not feral or a domestic but an actual wild species of cat, I also think ti's the UK's only remaining large wild predator. I'm pretty sure it's being out bred with feral cats and strays etc. My grandpa's family have a farm up in the highlands, they are wild cat friendly as they keep foxes, mice and rats away, although they have to keep an eye out during the baby seasons as wild cats are notorious for taking the odd lamb and piglet.
I'm all for conservation but some areas over the decades have adapted, where as some areas have not.