So you got a great deal on your eBike! You live in New York State and you got it from - ooooh...I don't know - let's say Wisconsin. Great deal! And you explicitly asked about the warranty. And the answer is yes! You have a warranty. It even says so on the dealer website.
So you get it shipped - local bike store sets it up - all is well! It's brilliant - you love it! You enjoy it so much you use it all the time! Two months in...it won't fire up. Battery in...press start...huh. Take the battery out, plug it back in, still nothing. Weird...why is that happening...
Not to worry! You have a warranty. So you ring the local bike store. Nope...they don't have diagnostics or training. So you ring the nearest dealer.
And the dealer says, "Sorry. Not my problem. There is no mechanism by which we get compensated for the work we do. You need to ship it back to where you bought it". Which is true. The Manufacturer will supply any replacement parts (and will sometimes compensate a dealer for repair work) but the local dealer is under no obligation to fix it.
What now? Take it to bits and re-box it? Ship it back? Maybe the dealer where you bought it will pay for that. It's at least $200, plu sbox and packing materials. Then you have to ship it back to you once it's fixed. Another $200. Then rebuild it. Let's hope the fix works first time...$700 for shipping and time?
More likely Wisconsin guy will ring the local dealer and offer peanuts for their time to fix it. Because they made peanuts on the deal. Their business model doesn't work if bikes have to be repaired. Local guy says bite me. So now what...?
If you buy local and it has a little glitch you take it back to where you bought it. Diagnostics run, problem identified, part replaced (probably had it on site already), no cost. Job done, zero hassle, happy customer.
How about other things...? Setting up the shocks...? Checking torque settings and spoke tensions? eBikes have their little quirks. They need to be set up carefully. They are heavier, mileages are higher, forces are greater. (Shock too full or too low....pop!. Brakes not set up right and not properly bedded in...squeal - judder!).
An eBike comes in an eighty pound box. You think it doesn't get dropped? Beat up by the courier? Has other stuff piled on top?
What if your brake rotor is slightly bent? Annoying slight rubbing sound - every time you ride - unless it's spotted and fixed...I always look for it. Rear derailleur got a bit bent? Gear change just not quite right...? Something happens on 1 in 5 bikes delivered in single boxes. I fix it before it goes out the shop, part of the business. 1 in 20 eBikes has an electronic component that has got hit, or was damaged, or needed a Firmware upgrade. I look for it, fix it before it goes out of the shop, part of the business. eBikes run high mileages, they can get little glitches. Easily & quickly fixed if you have access to someone with the right equipment and skills. Un-fixable if you don't.
If you want a local shop that's able to service your precious new eBike, bothered to get the equipment to do it properly, got accredited, etc - then there is a price to pay. As local shops we hate the interstate box shifters. The pile-em-high sell-em-cheap model destroys the local support infrastructure. And where does that leave us all? Where does that leave you a couple of years down the line?
Of course I'm biased. But that doesn't make it any less true.