I’m not sure it’s going to go down, though, to be honest. Monzo’s business pricing is similar to, or cheaper, than the pricing other traditional banks offer for small businesses (post promotional periods). Yeah, you can take advantage of 24 month free banking switch offers by Barclays, HSBC, and others, and they sometimes have a promotional free period too, but after that Barclays is £6.50/mo + not included charges for the e-payments plan. HSBC is £5.50/mo + charges. Lloyds £6.50/mo. etc.
Monzo appears to be the cheapest priced business bank account by any regulated bank. For organisations operating as a limited company, I think the £60/yr expense is minimal, even for the smallest organisations. Sole props may find the £60/yr to be a more notable expense, but still, compared to accountants, accounting software, and other business expenses, it’s not that much to pay for your bank account.
Tide’s usage-based billing makes me uncomfortable, personally. I’d rather pay £60/yr and know it won’t change regardless of what I do in the year, than have to think or worry about the costs of making a transaction to someone, or doing something else. I prefer all-inclusive pricing if it’s priced well, the cushion is just a bit better.