Non-polycyclic-by-finite maximal subgroup theorem for skew linear groups

Let $D$ be an infinite division ring, let $n$ be a natural number, and let $M$ be a maximal subgroup of $\mathrm{GL}_n(D)$. Non-polycyclic-by-finite maximal subgroup theorem. If $n=1$ or the center of $D$ contains at least five elements, then $M$ cannot be polycyclic-by-finite. The source presents this as a main result in its study of polycyclic-by-finite skew linear groups, following the observation that $\mathrm{GL}_n(D)$ itself cannot be polycyclic-by-finite.