@tony - You are mixing tax avoidance & evasion...
By reducing taxes (whether by avoidance or simply fewer/lower taxes) we encourage the legit tax-paying businesses to become more competitive & prosper. FYI, I prefer less complex tax rules that reduce the need for tax avoidance.
What matatus, etc do is tax evasion... that needs to be cracked down on... that will relieve the burden on legit businesses e.g. bus firms.
Greedy when others are fearful. Very fearful when others are greedy - to paraphrase Warren Buffett