Building corpora has been an ongoing research activity since the 1990s. Many countries lacked the academic programs and support to build them. Often, the material isn't even there. E.g., wikipedia is a great source, but many "national" wikis are rather empty. The Bahasa wiki has 1/10th of the articles of the English one. They also seem to be shorter.

But also, Apple doesn't do much research. MS, however, has always had an active NLP research and support program, if only because of the importance of Word. But Apple depends on the research available from third parties.