I think the future for lbs's is servicing which is helped by manufacturers making bike harder to service at home. Not impossible, but harder.
This is exacerbated by manufacturers selling direct which cuts lbs's options.
While I largely agree, I also think this will probably have a negative knock-on to those doing the work professionally - more complex jobs require more specialised tooling and an increased amount of propriatory / non-standard components so more stock to carry / more delays in sourcing etc.
On top of this there's the rise of e-bikes which will bring their own set of restrictions (intentional or otherwise) plus the need for different skillsets and tools.
All this against a backdrop of perpetually changing standards, suppliers going bust, spares availability becoming reduced through the ever looming spectre of obsolescence.
If one good thing's come out of the collapse of the bike industry, I hope it's that it might have slapped some sense into the manufacturers who were running away with change for change's sake; often to the detriment of the end user.
I think the smartest route for shops is undoubtedly going to be service-led, however I doubt it'll be a picnic.