Yeah, Russia is getting a lot of criticism for this from locals, but nothing changes. The reason is that any large russian business is an international business. They are either a publicly trading company, or have a headquarter in Europe, or partially owned by an international company. For them getting sanctioned would mean multi-millions losses, losing investors, suppliers, and much more. Even the largest state-owned Russian bank cannot afford to open a branch in Crimea because (as they have publicly commented) this will result in mass loss of their investors and will crash their stock price.