Nortel wasn’t killed by Huawei stealing their IP, which certainly did happen. They tanked themselves with some terrible accounting that hid the terrible situation they put themselves in. Nortel and Enron are the reason GAAP is the gold standard and legally required to be reported these days.
Uber has posted profits for the last two quarters. Lyft hasn’t yet been profitable, but they have been reducing their losses quite a bit.
I don’t think either of them will fail this year. Some AI gold rushing unicorns out there certainly will. It’s hard to know which though; they’re still private companies.