Unless you are a significant shareholder, none of the above brands are yours (Siemens etc. included). If you do own shareholding, then you own those brands (to the extent of your shareholding).
Most big companies are multi-nationals. IBM has more employees in India than USA. It being US originated company doesn't restrict from going global, however best it want to run it's business.
Deutsche Bank is headed by an Indian, but being Indian is not a criteria for rising to the top; it's his capability.
Hence, your "national" level thinking is quite out of place in this globalized world. Perhaps, you have never left you home country and hence don't appreciate global realities. Come to Singapore - one of the most globalized cities in the world. And we welcome MNCs.