Earlier quoted context omitted.
Governments need to fund their operations, and allowing some businesses to dodge taxes because of arbitrary geographical differences is unfair and distorts markets.
The problem is not the general idea of paying sales tax. It's the complication of having ten thousand different sales tax jurisdictions. Complying with the law should not be such a nightmare you need to hire a middleman.
- mapping an address to one or more jurisdictions
- digital deliveries might not have a shipping address
- tax rates often depend on the type of product
- product types have different definitions in different jurisdictions
- some taxes are time dependent (back to school tax holidays)
- some buyers are exempt in some jurisdictions for some products