Your math is suspect, along with your hyperbolic reaction.
The increase is over 3 years...businesses on the threshold of failure will fail anyway, irrespective of
subtle changes to labour costs.
Do you have any data on capital/labour cost structures for these "coffee shops, laundromats, etc." by which you can justify your fears?
Think about
productivity and how it is calculated.
How is $1/hr going to affect it? Then consider the
marginal propensity to consume for those actually earning that egregious increase of wage.
Do you honestly believe that people
below the median income who are earning that wage will hoard the cash?
Now take that money and throw it in the hands of the well-off... what are they doing with it? Think hard on that one...
Those with poor management skills and an inability to adapt will be cleared out leaving
extra business for those that remain, at worst. At best, this will help to tighten the GINI, while stimulating
base economic activity (which was supposed to be the goal of all that "trickle-down" QE in the first place).
By any chance are you a Neo-Liberal?