It is possible, there are theories about a quantum computer breaking and decoding privatekey through public keys. Though it is far from happening today but it will be a serious threat for BTC security if Bitcoin security features do not improve along the advancement of computers.
Yea but who would have access to quantum computers? They aren't exactly in mass production. A state actor? Is this what OP meant by "somewhere"...?
IBM is making System One now. Governments probably have access to something even stronger.