Shiba Inu allready is a succes, which means being in the media when something happens will take place. So promotion will be on auto-pilot. Promotion is needed for being able to grow.
It has a community, so it's possible to create a stable-coin. People like stable-coins, and a well-managed stable-coin creates utility for a block-chain. It also has a DEX and people inside the community might prefer using that DEX for trading some coins.
Shiba-Inu has some instrumental utility, so it's more then a memecoin - this is needed for being a real succes.
It has maximum supply, this is very important, memecoins without maximum supply or at least something which comes down to the same thing, IMO don't have any future anyway.
Keeping the current market-value will be very hard. More and more new coins will come, there is not all to much competetive utility. In result, the current value seems to be way to high.
Of course sometimes one can make good trades on this coin, yet this comes down to winning because others are losing and this is something I never do for two reasons: it's not nice and trades on coins which seem to have a value on the markets which isn't way to high are a lot less risky.
In the now, in essence it's casino-money.