If the government is even thinking about Taxation policy it means it will be implemented. This is how a government makes money to run and country and implement social policies. If this tax is implemented then it will remain unless a new government comes to power. This is what I have seen in my country and other countries. I only know one thing they will not be making a lot of money from such a tax as in gambling or sports betting there won't be many winners. In my country, only online gambling as offline gambling is not allowed and every winning is taxed which is more than the percentage the Zimbabwe government is planning to introduce.