The best replacement for quotas is tariffs.

The best alternatives to quotas are rated as following:
★★★★★  tariffs
★★★  affirmative action
★  taxes
  affirmative action goals
  tariff

Your alternative for quotas is not listed? Suggest!
Speaking about quotas, one probably shouldn't forget about affirmative action.

Other search terms related to quotas and their ratings are:
★★★★★ affirmative action
You have in mind a companion for quotas and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of quotas in all years. Click on graph for more.
quotas
tariffs
affirmative action