Money for nothing

I was under the misapprehension that the basis of insurance was shared risk.  It appears that insurers are more and more able to manipulate data to assess risk individually, which is the antithesis of what insurance should be.  But, to be fair to them it is clearly very good business for the insurers to ultimately have risk free premiums paid to them.  Money for nothing!  This slow corruption of the whole insurance market must stop!