Short answer: It’s the right thing to do.
Long answer: The UN declared access to information and internet is a human right. from then A lot of countries joined this resolution and created their own laws, to guarantee everyone have access to basic information and services through the internet.
Some countries even have fines and penalties for non-compliant websites/applications.
in the last few years, there has been an increase in lawsuits to companies, which websites/apps does not comply with accessibility laws. and since each country have their own organization dedicated to support people with disabilities rights, almost every case ends with really high fines and monetary compensation for discrimination along with a court order for the company to comply with Accessibility laws.
Luckily you don’t have to go through any of these problems, because we’re here to help and together, we can do what’s right.