The problem with your argument is that you are too sympathetic to the choice of a business and not at all on the vital workers they employ. On the one hand you say employers shouldn't pay more based on a lack of skill yet you think productivity doesn't matter at all. Thats bullshit. And yes technology has increased but that doesn't mean it acconts for the 100% increase. It probably should be factored in to an extent but that still wouldn't justify keeping wages the way they are now.
If this was 10 years ago, I wouldn't even make this argument but since the recession there has been a significant increase in low wage jobs and a significant decrease of good paying jobs. That means people have NO CHOICE but to accept shitty paying jobs. A business is about give and take. Workers help the company make profit and the company must respond by paying them fairly. Right now the minimum wage is way behind on inflation. That means the last time someone could make a secure living on 10 an hour was in the 1970s. Don't you think inflation matters? Shouldn't the low level workers be compensated? Without them a business cannot even exist. That throws out your philosophical argument about forcing businesses to pay more.
It's interesting you say I shouldn't argue with ethics but that is the basis of your entire argument is it not? Not forcing businesses to increase their wages?
It's not a matter of sympathy for business. It's a matter of what a business pays should be the choice of the business doing the paying not someone like you that doesn't own one. When it comes to the workers, I don't have sympathy for someone that makes personal choices in private life then expects the government force a business to pay for something totally unrelated to what pay should be based on, skills.
That you still claim workers are the overwhelming majority of the reason productivity is up and give lip service to technology invalidates your argument.
It could be 10 years ago or 10 days ago, it doesn't matter. You argument is based on situations not the only factor that should go into determining a wage, skills.
It is give and take. Someone works a job that is worth $7.25/hour and they get paid that much. That's fair. To say otherwise is saying fair involves making a business pay more than skills are worth determined by those not doing the paying.
Without a business, there would be no workers. If no business existed, no workers would exist. Therefore, before any worker position ever comes into place, the business must come first.
My argue is based on a business being the one to determine the wage not letting some asshole like you have a say in what a business you don't own pays.