1: that's offtopic. Neither does anyone advocate for buyers purchasing the copyright, nor does the copyrhight give the copyright owner unmitigated power to do whatever they want (aka disregard laws).

What the petition asks for is that people actually own their licensed copy and that ownership of the copy is treated the same as ownership of any other copy of any IP. For example, if you own a book, you too own a licensed copy of the book. This means that e.g. the copyright owner cannot legally stop you from reselling the copy (and believe me, they tried. But laws were enacted to stop that).

The owner of a book also doesn't have the right to unilaterally revoke your license to the book. They legally cannot put fine print somewhere into the book that dicdates that you have to return the book when they ask you to or anything like that.

The petition asks the same for games:

• Publishers need to be legally stopped from limiting the buyers from using the copy they bought.

2: That is discussed in the petition as well. I recommend that you read the petition before commenting about it.