Why should taxpayers have to take the risk for Google if the opportunity and reason for Google to be there is already there? If it's already win-win for everyon

Why should taxpayers have to take the risk for Google if the opportunity and reason for Google to be there is already there? If it's already win-win for everyone, why even have the tax abatement? Google being the extremely profitable company it is, shouldn't need to create liabilities for a market it's trying to promise jobs too. a lot changes in 20 years and if its anything like the telco industry it will mean they will rely on these incentives for everything they do in the future because people seem willing to give it to them.