When Hyundai started offering Korean cars in N. America in the mid 80's, nobody thought they'd make it either.
Fast forward 20 years and they are gaining market share over their Japanese and American rivals.
The world wants something different, new and fresh (I don't, but I'm not in the majority) and Tesla is willing to offer it.
Only a matter of time until these alternate fuel vehicles become the norm.
That's an apple-to-oranges comparison; Hyundai faced a different challenge than what Tesla is dealing with now.
Hyundai wasn't bringing anything new to the table when it introduced a cheap, Mitsubishi-derived econobox to the US market in the form of the Excel. Its chief virtue (and disadvantage) was that it was a cheap econobox (IIRC, only the Yugo cost less at the time), whose natural appeal only extended so far. But, it was an entry point for a fledgling, but not young company (HM was ~20 years old at the time), backed by a large chaeboi which could afford to be patient and take time to grow its business.
Conversely, Tesla hasn't had difficulty finding appeal, even outside of the techies and early adopters. The interest in the 3 alone is indicative of that.
Tesla's challenge has been a continuing inability to execute on its business plans, and to actually deliver what it has promised, on time, on budget, and on price.
Investment in production lines and equipment is costly, even for established OEMs, and Musk's risk in ignoring a century's worth of industry experience and attempting to shortcut his way in making Model 3s has been a costly failure, both in terms of capital and opportunity cost, as well as lost volume. It has been forced to discard equipment, and reconfigure the line with new equipment and more workers to do the job that the original plan could not.
The company's immediate concern is slow down the rate at which it burns cash, hence the layoffs, and ramp up volume to grow cash flow. If it doesn't get things in order, a three-year future is in jeopardy, never mind a thirty-year future.
Musk has repeatedly stated the Tesla doesn't need to raise any more capital, but it's on borrowed time if it doesn't act, and probably do that, as well as cutting costs.
Investors have been patient, but such patience is not infinite (at least to those who are wise), and faith alone doesn't pay the employees or the bills.
Tesla was already facing a challenge in driving EV adoption in the mass market, and hasn't made it any easier on itself by doubling down, in the way it has tried to operate. It still has certain advantages, but the window of opportunity is shrinking as the other OEMs enter the market. They will have to catch up in establishing charging infrastructures and supply lines for battery and motor production, but they do not lack the experience, nor expertise in mass vehicle manufacturing, or lack the capital to make those investments.
Why it finds itself in this situation is another topic in itself, but suffice it to say, Musk is a big part of that discussion, as well as contrasts between how Tesla is managed and how SpaceX is managed.
That's just how the facts appear to me, as neither a fanboi, nor a hater.
But, Tesla is an American company, employing American workers, and on the forefront of a shift in the industry, so it's puzzling how many in the country are rooting against it. There are a lot fewer things than before where the US could claim itself as the leader. This is one of them, at least for now.