It's not a big deal for Bohemia to establish its own regime, the problem is that most of Austria-Hungary's industries are located in Bohemia, especially the military industry. Losing the Bohemian region basically relegates Austria-Hungary to a second-rate country.
The Bohemian Province in East Africa (Zimbabwe) is actually named after the Bohemian region of Austria-Hungary, representing the most developed area of industry in East Africa. Of course, the original Matabele Province industry has been divided into two, with some industries being merged into Lorraine Province along with Bulawayo.
Moreover, besides the Bohemian Industrial Zone, the industry in other parts of East Africa is also strong, having developed several cores. Even if one industrial zone suffered a devastating blow, it wouldn't lead to irrevocable losses for East African industry.
