If Bitcoin price increases suddenly.
Does this change encourage buyers to consider investing in Crypto solutions like ICO platform or Exchange Software Development for their Business?
It depends on what the purpose that these software and platform will bring to the community, but since you mentioned ICO I doubt if it will going to have a demand, investors are leaving ICO for good in exchange to IEO and besides so many ICO platform are already online, but if the product is good even if there is no increase in price of Bitcoin investors are going to buy it.