Warning: Rant to commence in 3, 2, 1, ...
Given 40 years of bass playing, etc., and having spent a small fortune on musical equipment during this time, my take on brand loyalty can be reduced to a very basic premise, when needs be; as I might argue, is now. Sure; you will find posts written by myself that sing the praises of various companies e.g., Line 6, etc., and brands e.g., Boss Pedals, Harley Benton basses, etc., but that's actually extremely misleading in the context of so-called "brand loyalty".
You see, IMHO, when "push comes to shove" (whatever that means), brand and/or company loyalty is a mindset that suits the provider, not the customer; they maintain it, we're expected to conform to it. After all, we are humans (for the main part, with the possible exception of a few vocalist I have run into) and, as such, we need to "belong". Hence, it's hardly surprising that we adopt the tribal behaviours associated with identifying with and defending matters based on brand or product loyalty. As above, I am no exception; usually ...
... however, when the "chips are down" (again, ... ***?), none of this matters; not one iota. Simply put, the brands are a means to an end, based on the objectives of the companies that provide them. Simplifying further, their objectives can be reduced to a single goal: To make money. And who do they target to do this?; well, you, me; in fact, anybody who is willing to part with their hard earned cash.
More over, companies are typically ruthless when it comes to maximising profits e.g., chopping and changing product lines, switching markets, etc.; indeed, whatever it takes to make more money. After all, that's why they exist and branding is a means to their ends; which isn't always conducive with their customer base. However, none of this matters ...
... in summary, companies use branding to exploit their revenue sources (sometimes referred to as customers) to make money. They will, and do, chop and change to suit and care not about anything else, including you and I e.g., as soon as they identify a more lucrative market in which we play no part, we are no longer relevant. Hence, the brands "disappear", the companies move on and we are left with whatever unsupported legacy products we bought; and for a large part, purchased under the influence of misplaced brand loyalty.
Hence, in conclusion, if you believe that companies give a f**k about you, think again. You are a revenue source and will be treated accordingly. You will be lured by branding, etc.; you will purchase accordingly; but you will also be "dumped" at the discretion of the companies involved. They care not, and thus, when it comes to branding and company loyalty, I reciprocate in exactly the same manner: I care not. I buy what I want/need as pragmatically as I can, based on the best information I can find; which is not found in the language associated with branding. It's a misnomer, perpetuated by companies. We are, of course, involved; but, just as long as it suits them, not us.
Being somewhat blunt: Brand loyalty? F**k that. Loyalty is a two way street, so don't let them fool you. Instead, use your common sense and basic intelligence. See through the charade; buy what you really want and/or need; not what they companies would like you to. To hell with them, and their branding. Make informed choices about your purchases; live long and prosper.