Who is Hasso Plattner whose spectacular museum has opened near Berlin?

To the software billionaire Hasso Plattner, the Mexican artist Rufino Tamayo is better than Picasso. Among his art treasures on show at the new Barberini Museum in Potsdamopened to invited guests on 20 January including Bill Gates and chancellor Angela Merkelis a painting of a woman in a lighted room, viewed from the dark outside between half-open blinds.
 
Plattner first saw the painting for auction at Sothebys in New York, but it was too expensive for him. Ten years later, in the early 1