I think that financially, due to shareholders the economics of just about everything are too geared towards inflating short-term/immediate profit whatever the damage, rather than long-term sustainable investment that delivers benefits further down the line. This has started a spiral of decline that it's very hard to ever break, even if the mentality to do so existed.
That's a gross misrepresentation of what shareholders require - some look for short term profits, but not all. Look at the kind of companies that pension funds invest in, they want steady, consistent returns over the medium / long term.
The challenge for both companies and shareholders is how long do you keep down a path which is progressively losing you customers ? In my 25+ year working career I've held Head Office roles in 3 retailers, one is still trading, one is defunct and one is now owned by somebody else.
The first of those 3 had a clear strategy, it closed stores when they weren't profitable. They moved quickly into new product areas and deleted others when they were starting to fail.
The second of those was running an estate where a number of stores were loss making, yet people harked back to how those stores used to be profitable as the justification for "one more year and they'll be fine". Add in a confused focus in terms of what the company was selling, inconsistent ranging etc.
The third was more like the first in terms of managing its estate, but held onto legacy product areas alot longer than other retailers. Fine if there's still the demand but it ties up cash and space holding those.
The problem is the armchair critics all say the problem with the first of those is they deserted the high street (which they did, but because they couldn't get retail units which were fit for their needs) and didn't keep as many products (because they were focused on the top selling lines), and were "overpriced" - which they weren't - they were ensuring every item they sold was profitable, because the margins were relatively low.
The armchair critics would say of the second company 'oh but its good they are supporting the high street', but those self same critics wouldn't actually *use* those stores, because they'd compare the prices with mail-order or online and buy from there.
If you'd bought shares in any of those three companies, you'd have lost capital value no doubt, but the first still exists and still pays you dividends, the second you'd have lost your money and the third you'd hold some different shares which are doing "OK" you'd be in a similar position to the first.