Because I grew up in the Ottawa region and many of my friends parents worked at Nortel.

https://www.cbc.ca/amp/1.1137006

Someone was hacking into Nortel and stealing R&D, trade secrets, the hard work of the research division. That someone was in China. Soon after, a competitor named Huawei with a minimal R&D budget was selling very similar products at lower prices. It put Nortel out of business. My friends' parent all lost their jobs.

This is why I personally won't buy Huawei products.