Had to check out that "silicon shortage" link.
Not quite what it sounds like.
A major microchip factory can cost over a billion dollars. When the market for solar cells justifies it, there will be investment in factories.
Try and push it too hard with government leverage, and you'll end up with another Synfuels project.
The current price per Watt peak of high power solar modules today is about 15 percent of what it was in 1982. Progress is being made.