It's a case of the product just not selling in the USA
The issue was never cost, the product is competitive but also take into consideration that the U.S.A. doesn't really trust Chinese manufactured IT kit, remember when IBM sold Llenovo to the Chinese? That absolutely killed the legendary ThinkPad off within the U.S. government departments.
Whilst Huawei-Symantec branded storage has been quite successful in the Asian and African markets, it's still battling to gain a foothold in the European markets
The reasons are fairly academic, it's neither a well know or trusted brand and there are plenty of established and reputable storage vendors doing business in the West.
No biggie, Huawei-Symantec will thrive, just not in the U.S.A. and perhaps not in Europe either
Note: I worked for (on of the) H-S's UK distributors and the general consensus in the UK is "we don't know the brand (irrespective of the Symantec suffix) and we prefer to deal with those we know and trust in regards to support"