I won’t recommend Starknet to apporach like other projects like optimism else it will become next optimism. Fund distribution is way too much restricted in such projects.
I think Starknet is pretty distinct from other L2s. The steeper learning curve is felt. Making consumers feel at ease using Stark and its unique wallets would be a major achievement. People will seek for simpler options if they feel it is difficult to use. Having said that (and this is where I show my bias), there are several locations where people can pay. If sticky liqudiity is indeed lacking in this area, which is crucial, where should we go elsewhere and how can we entice them to Starknet?
The programming language is another potential problem. So many L2s are, in some way, copies of others.