I have a question here. How do you combat lobbying when you have the likes of Microsoft so deeply entrenched in a government, the likes of Germany and Limux and

I have a question here. How do you combat lobbying when you have the likes of Microsoft so deeply entrenched in a government, the likes of Germany and Limux and the whole deal there. Same in India. The government has set aside a proper budget to spending towards buying Microsoft products for office use when 10% of that sum could build world class software but lobbying. I once pitched libreoffice to a head of a India government department and I was told in as many words "the central government gives us a proper budget for this. If we don't spend it, it will lapse. Let it be. " Next, I use some taxation software provided by central government but its all excel based. Why cant they essentially switch to the likes of using Foss software because the chain effect of the cunsumers of these software have to stick to excel. On and on. If anyone can help pass the message, let me know