So your argument is that scientists should stop doing experimental testing because wikipedia has all the answers?
Sorry to burst your bubble, but if it were not for these 'rich scientists' you refer to, there would be nothing to put on wikipedia in the first place.
There are many potential uses for a laser of this power, and until you have the technology there is no way of knowing fully the ways in which it could be used to further our understanding of the universe.
200 million is chump change, when you consider the amount of public money utterly wasted on the military or recapitalising banks.
If anyone listened to people like you, we would be still in the dark ages burning books and persecuting those who dare attempt any form of scientific advancement.