NB: For those English native speakers... which is the best subject when addressing a company, for instance, Apple/Microsoft...? I used "it" here, but sometimes I also use "they"... and I don't know which one is correct!
Both are acceptable. In the UK, Australia and New Zealand, the convention seems to be to refer to a company in the plural, i.e. "they". In the US, the convention seems to be to refer to a company in the singular, i.e. "it". To me (in New Zealand), "they" seems more natural because most companies involve multiple people.