The government can not "screw the business and the end user" because tax rates are public. VAT changes don't just happen in secret. Tax changes to specific product categories (such as extra taxes for alcohol in some countries) are publically debated. And if you want lower taxes you try to vote in a more economically right-wing government. The framing of your statement makes it clear you just don't trust/like governments. That's fine, I guess, but it's an incredibly strong bias in your arguments