As others pointed out when this topic first came up, there are services like TaxJar that will collect and file sales taxes. The challenge is that you have to set all of this up of course and connect it to your accounting systems in some way. And the cost for collecting and filing in all relevant states seems to be something over $10K/year (assuming that there aren't now also business licenses, etc. required).

One can hope that states will approach this sensibly. One expects that at least some will not and, best case, there are going to be some compliance costs for small businesses.