In order to get conciseness, you need to accept defaults that work for everyone. Those defaults might not be that great for you, but they're good enough.
In order to get performance, those "good enough defaults" are suddenly no longer good enough, and now you need to get very specific with what you're doing.
Maybe with a smart enough compiler, a high-level language could be compiled to something with very good performance, but the promise of that "sufficiently smart compiler" has yet to be fulfilled.
In order to get conciseness, you need to accept defaults that work for everyone. Those defaults might not be that great for you, but they're good enough.
In order to get performance, those "good enough defaults" are suddenly no longer good enough, and now you need to get very specific with what you're doing.
Maybe with a smart enough compiler, a high-level language could be compiled to something with very good performance, but the promise of that "sufficiently smart compiler" has yet to be fulfilled.