Heavily depends on rate of adoption and how popular you think it will become. Maybe blockchains don't scale (right now), but Lightning network doesn't really scale either. You need something like ~100MB blocks to even start thinking about it being a possibility (while also ignoring all the other UX problems with lightning)

But if it still matters to you Seraphis upgrade that is coming down the road, and being worked on atm, will allow a basic lightning type of network on Monero