It's in the company's interest to keep its employees satisfied and keep the work flowing. Once you present them with reasonable contract proposals, management usually compromises. They'll tell you the plant may close if they have to deal with a union. They'll tell you that unions are bad for business. They'll say most anything to convince you that unionizing will threaten your job.
Companies fold for economic reasons.
The vast majority of failed businesses are non-union. If your company is really in bad shape, let them prove it by opening their books. They may threaten that if you leave your job for a strike you could lose it forever. They may ask you how your family will survive if you are forced out on strike. No union can force you to strike.