You can do it yourself right now just by telling all your clients you are filing extensions for all of them and if they expect to owe money, here are the instructions to make an estimated-tax payment online.  

You can explain to them that IRS wants highly-trained professionals to be preparing tax returns, and they want them to be doing it only two months a year.  The franchises support this because they rely on cheap part-time labor.  

When I worked for IRS in Illinois, covering several small posts of duty with a weekly Taxpayer Service visit, there was an office auditor at one who also (with employer permission) also held a part-time job as a shoe salesman.

Today, it's the shoe salesmen who work part-time doing tax returns.