Why is there so much focus on tort reform?

Regarding malpractice claims and yet it stops there. For example record companies sue children for 13 million dollars for downloading 6 songs yet killing the child is capped at 300,000 in texas. I'm just wondering how frivolous only seems to apply towards lawsuits filed by the public when companies routinely get outrageous judgements, like walmart got a man sentenced to life in prison for taking a pair of sox. A family gets side 10 million dollars for building 1 inch over a companies property line, but when it time to be aued back suddenly we seem to chant the word frivilous.