Jacobs hasn't existed as a real firm for some time.
They were bought by one of the tooling conglomerates whose policy is to use the reputation of purchased brand name to charge high prices for, at best, barely adequate for the market products sourced from low bid Far Easter suppliers. Especially at the retail end most purchasers won't understand the difference between properly engineered lasting quality and something that will, probably, work for a while. Most folk inn the target market won't be set up to properly inspect and test a chuck beyond basic concentricity, and how many even do that. The cost of refunds and returns is cynically built into the business model. It's a lot. I'd guess around 30% is allowed for.
Generally the difference between low bid suppliers and proper, high engineering quality ones is in allowable tolerances and quality control. Low bid works to wider tolerances and much loss QC inspection rates. Unlike the real cheap end of the market things are made from OK materials on decent machinery so the probability of producing at least acceptable goods is high. Mix'n match of wider tolerance band components means at least some will be good enough to help support the brand reputation.
Has to be remembered that large firms are purely finance driven. It's interesting to examine the company and plant buying and selling machinations of VW Group. Thats where they make their money. Car production is basically an add on that makes the finance stuff possible!
Once an engineering based company is run for the finance it's basically dead. May take a long time to die. General motors has taken half a century but its now entered its dead spiral as part of Stellantis.
Even a cursory examination of the de-industrialisation of Britain shows that it's been driven by our finance plays. Whether the steady company consumption of GEC under Weinstock followed by its spectacular final implosion attempting to become a "fibre telecoms" company. The cynical Staverly acquisition of most of Britains machine tool companies. Or the many lower level failures and sell off of lesser names. Such as Jewett, Napier et countless al. The machinations of the finance heavy board of Westland Aircraft during the run num to WW2 are sobering.
Out of curiosity a friend recently dismantled a Bosch battery drill and it's apparently identical, except for the colours, low end (LiDL?) counterpart. Identical right down to the control printed circuit, components and all visible part numbers. Including the motor. Quoth he "£100 is a lot to pay for a different batch and colour scheme."
Clive