Interactive Brokers is good for investing long term (5-10 years)?

I convinced my father to start investing some money each month in stocks

to generate profits in 5 or 10 years, as a support for the pension he would get (which isn't high). I think that investing in companies such as Google, Apple or Microsoft would work for this objective but I don't know which platform would be good for this. Interactive Brokers should work? or do you recommend another one? I live in South America and the other brokers that he could use are XTB, Tickmill, Avatrade, Ninjatrade and other few.