I do not know about other countries but in my country, politics has compromised the economy growth with equity.
As the transition of power evolves, the value of the citizens are depreciated in the eyes of the governments which now optimizes citizens to rely living in fortitude of bravery and accepting challenges so that we don't give it all up hopelessly.
We fight it out by ourselves like there is no government to provide us with some basic amenities and quite better to be called "a daylight robbery or extortion" that once individuals has struggled to make productive differences from the economy slavery chain of the government, you would be will assigned to revenue on taxations.
My question.... If the government could find utilizations on the citizens for taxations on generating funds for infrastructures and other government services , why don't they invest on the citizens or support those with the potentials to productiveness knowing quite well that once they makes success, they would be demanded to also contributed to the growing structures of the economy?
What the government knows is that if a successful individual refuses to comply with the government order, they will get you frustrated tending to fold your productiveness qualities or you go to jail.
So, why don't they tax the poor who barely struggle to eat?:Simply because they found those set of citizens useless and the prison will be occupied if charge them for not paying taxes since there are more Poor people than the rich in the society.
I don't know where are you from but there must be some programs in your country that help farmers, startups, tech companies and local business/production in your country. I don't think it's abandoned at all. They won't fund every business but there must be some niches that country wants to develop and with the right mind and good team, it's possible to get funding.
By the way, governments don't tax poor people but it's not like they tax rich people too. There are three classes: working class, middle class, and upper class. Working class does the most job and gets the lowest payrate. The middle class might be working as much as work class but they get better quality of life but still, they are the most pressured class, middle class pays the most taxes, they are the true strength. Upper class pays the least taxes because they are rich, have connections, influence, power and the possibility to bribe others, so, you know, they don't pay much taxes, middle class pays the most.