Pretty much every competent reloading press is rather difficult to find sitting on the shelf (I got lucky and grabbed a Dillon RL550B from Graf's a couple weeks ago). Components are still "catch as catch can."
There's a whole ton of people clamoring for reloading gear and components. Dies in popular calibers are hard to come by for that reason. And as you point out, they aren't the kind of thing you repurchase every so often- one die set will keep you for life (usually). So there isn't much point in adding capacity; it's just going to sit idle once things get caught up.