I didn't know that some countries impose spending limits on people's bank accounts. This is weird.
Spending lots of BTC on expensive purchases doesn't make sense to me. You can spend altcoins or stablecoins on buying stuff(if the seller accepts altcoins and stablecoins as payment). Maybe you could gather more cash and spend cash on offline purchases.
The BTC price is going to increase even more, spending BTC seems like a bad move right now.
I don't believe that Amazon is ever going to accept BTC/crypto as a payment method. They are doing just fine with fiat payments.
Hmm?

I'm sure every banks have limits on people's bank accounts, so it looks like you didn't make research or simply didn't care at all. But, I'm also like you, I have never spend more than my limit because the limit is way too big.
We also have an option to upgrade our account which will increase our limit, few people might have a lot money which could make them able to spend more than the limit. But, do they always spend a lot of money everyday?

This case is very rare, even Bitcoin can fix this, it's not fixing the problem of most people.