Must admit, they are two-sided proposals, but anyway, I think we should be ready to react in time.
My prediction, if this will happen, many people will remove their software from public repositories, to avoid liability.
And/or will be changed licenses, probably many OSS will become "only for educational purposes", something like this.
This is from one side, dangerous for OSS, as will lost many third part "unimportant" depends, but from other side, will be powerful opportunity to make paid version to cover costs of development and could significantly increase level of OSS quality.