Undergraduates with family income below $200k will be tuition-free at MIT

This is a great step in the right direction. I can't speak directly for MIT, but there are issues with how these programs don't apply to parents with small family businesses. My parents had a small business, with my father taking home a salary of $XX,XXX. Duke University used the business assets to determine the EFC (expected family contribution) of literally 90% of the salary. Essentially saying to sell off the family business for the college fund, which was a non-starter.

Small businesses are allegedly the backbone of America, and I feel these tuition support programs overlook this segment of the middle-class.

Why are such things in the US so complicated? Where I live, studying is much much cheaper for most professions,for everyone!

That's the only fair way. Also, a set of well educated people pays itself back later in the form of mostly income and added value taxes, which provides money to keep studying for cheap for the next generation.