The way to handle the class action waiver is for all the would-be class action lawsuit plaintiffs to file individual lawsuits. Companies will realize pretty quickly why they do, in fact, want to only have one lawsuit to contend with instead of several thousand or million.
Not everyone has funds for a lawyer or time to get it done. Sueing someone in this country is complicated and expensive
Theoretically, everyone’s supposed to have right to self-representation. If some enterprising individual helps them to forego their need for a lawyer, and gives lengthy instructions on all the right forms, even if only 40% of the participants do it correctly, it could be a big hassle for them.
Of course, the other issue is that it would be a big hassle for the courts.