The bottom line is that if C”V a married woman remarries, without receiving a Get from the 1st husband, who C”V refuses to give her one;
she’s still an Aishes Ish to the 1st husband, and her children with the 2nd husband are C”V Mamzerim.
So she can’t move on with her life, until she receives the Get.
If a married man remarries, without giving a Get to his 1st wife;
his marriage to the 2nd wife is still Kosher, and his children with the 2nd wife are NOT Mamzerim.
So he CAN move on with his life, even without the Get. It just means that now, according to Judaism, he has 2 wives, instead of one.
So R”L it’s the WOMAN Agunah who has more to lose.