We have good news for you. You know that bigger rival company, who somehow make a similar product, and charge more for it, yet somehow don't pay any Corporation tax? Maybe they're paying interest on a "debt" to a company with a suspiciously similar name located somewhere sunny that seems to arbitrarily set the interest on the debt to exactly what might otherwise be their annual profit, resulting in zero tax... or they have to "license" their brand name from a company that somehow only owns that brand name, and only employs one accountant and a secretary in a tiny principality in Europe?
We'd like them to be on a level playing field with you. We can't guarantee this'll mean you win, but maybe them paying the same taxes you do (which will make a huge difference to the affordability of projects like UBI) would help you.
You are going against the entire human history of governments and taxation. Governments use tax incentives to (charitably) encourage desired behavior and (pragmatically) reward supporters. A clean tax code without these deductions takes significant power away from the government. It is extremely unlikely to every happen.
We'd like them to be on a level playing field with you. We can't guarantee this'll mean you win, but maybe them paying the same taxes you do (which will make a huge difference to the affordability of projects like UBI) would help you.