I wonder how much the tourism companies help with the conservation of animals, habitats and surrounding ecosystems?

That's a good question, and I don't think there is a clear answer here. I guess it entirely depends on the organization that owns the wildlife tourism business, the country it operates in, and what type of thing it is.

Thanks for leaving a valuable comment, @kiristin! You raise some good question, and I definitely agree with you that tourism is a double-edged sword. It has played a big part in the conservation of some species, but has also been the demise of others. It's unfortunate that many national parks and other protected areas are dependent on the money from tourists in order to function, but luckily some are financed entirely by the governments, which allows them to protect the area without having to build hotels, shops, and restaurants next to it in order to afford to protect it.